patch 8.1.1811: popup window color cannot be set to "Normal"

Problem:    Popup window color cannot be set to "Normal".
Solution:   Check for non-empty 'wincolor' instead of zero attribute.
            (closes #4772)
diff --git a/src/screen.c b/src/screen.c
index 04d0e2f..55437e1 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -995,7 +995,7 @@
     if (*wp->w_p_wcr != NUL)
 	wcr_attr = syn_name2attr(wp->w_p_wcr);
 #ifdef FEAT_TEXT_PROP
-    if (WIN_IS_POPUP(wp) && wcr_attr == 0)
+    else if (WIN_IS_POPUP(wp))
 	wcr_attr = HL_ATTR(HLF_PNI);
 #endif
     return wcr_attr;
@@ -9210,8 +9210,8 @@
     /*
      * If there is a next window or a status line, we first try to delete the
      * lines at the bottom to avoid messing what is after the window.
-     * If this fails and there are following windows, don't do anything to avoid
-     * messing up those windows, better just redraw.
+     * If this fails and there are following windows, don't do anything to
+     * avoid messing up those windows, better just redraw.
      */
     did_delete = FALSE;
     if (wp->w_next != NULL || wp->w_status_height)
@@ -9241,7 +9241,7 @@
     if (screen_ins_lines(0, W_WINROW(wp) + row, line_count, (int)Rows, 0, NULL)
 								      == FAIL)
     {
-	    /* deletion will have messed up other windows */
+	// deletion will have messed up other windows
 	if (did_delete)
 	{
 	    wp->w_redr_status = TRUE;
diff --git a/src/testdir/dumps/Test_popupwin_20.dump b/src/testdir/dumps/Test_popupwin_20.dump
index affe148..2989cd1 100644
--- a/src/testdir/dumps/Test_popupwin_20.dump
+++ b/src/testdir/dumps/Test_popupwin_20.dump
@@ -1,9 +1,9 @@
 >1+0&#ffffff0| @73
-|2| |++0#0000001#ffd7ff255|-@11|+| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|++0#0000001#ffd7ff255|-@11|+| +0#0000000#ffffff0@18
-|3| ||+0#0000001#ffd7ff255|h|e|l@1|o| |b|o|r|d|e|r||| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255|h|e|l@1|o| |p|a|d@1|i|n|g| | +0#0000000#ffffff0@4||+0#0000001#ffd7ff255| @11||| +0#0000000#ffffff0@18
-|4| |++0#0000001#ffd7ff255|-@11|+| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4||+0#0000001#ffd7ff255| |h|e|l@1|o| |b|o|t|h| ||| +0#0000000#ffffff0@18
-|5| @40||+0#0000001#ffd7ff255| @11||| +0#0000000#ffffff0@18
-|6| |++0#0000001#ffd7ff255|-@8| +0#0000000#ffffff0@9| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|++0#0000001#ffd7ff255|-@11|+| +0#0000000#ffffff0@18
+|2| |++0#0000001#ffd7ff255|-@11|+| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|+|-@11|+| @18
+|3| ||+0#0000001#ffd7ff255|h|e|l@1|o| |b|o|r|d|e|r||| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255|h|e|l@1|o| |p|a|d@1|i|n|g| | +0#0000000#ffffff0@4||| @11||| @18
+|4| |++0#0000001#ffd7ff255|-@11|+| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4||| |h|e|l@1|o| |b|o|t|h| ||| @18
+|5| @40||| @11||| @18
+|6| |++0#0000001#ffd7ff255|-@8| +0#0000000#ffffff0@9| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|+|-@11|+| @18
 |7| ||+0#0000001#ffd7ff255|b|o|r|d|e|r| |T|L| +0#0000000#ffffff0@9| +0#0000001#ffd7ff255@3|p|a|d@1|i|n|g|s| @2| +0#0000000#ffffff0@37
 |8| @20| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@12||+0#0000001#ffd7ff255| @2|w|r|a|p@1|e|d| |l|o|n|g|e|r| |t|e| @2||
 |9+0#0000000#ffffff0| @20| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@12||+0#0000001#ffd7ff255| @2|x|t| @17||
diff --git a/src/testdir/dumps/Test_popupwin_21.dump b/src/testdir/dumps/Test_popupwin_21.dump
index 7c2718d..68594f9 100644
--- a/src/testdir/dumps/Test_popupwin_21.dump
+++ b/src/testdir/dumps/Test_popupwin_21.dump
@@ -1,9 +1,9 @@
 >1+0&#ffffff0| @73
-|2| |╔+0#0000001#ffd7ff255|═@11|╗| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|╔+0#0000001#ffd7ff255|═@11|╗| +0#0000000#ffffff0@18
-|3| |║+0#0000001#ffd7ff255|h|e|l@1|o| |b|o|r|d|e|r|║| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255|h|e|l@1|o| |p|a|d@1|i|n|g| | +0#0000000#ffffff0@4|║+0#0000001#ffd7ff255| @11|║| +0#0000000#ffffff0@18
-|4| |╚+0#0000001#ffd7ff255|═@11|╝| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|║+0#0000001#ffd7ff255| |h|e|l@1|o| |b|o|t|h| |║| +0#0000000#ffffff0@18
-|5| @40|║+0#0000001#ffd7ff255| @11|║| +0#0000000#ffffff0@18
-|6| |╔+0#0000001#ffd7ff255|═@8| +0#0000000#ffffff0@9| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|╚+0#0000001#ffd7ff255|═@11|╝| +0#0000000#ffffff0@18
+|2| |╔+0#0000001#ffd7ff255|═@11|╗| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|╔|═@11|╗| @18
+|3| |║+0#0000001#ffd7ff255|h|e|l@1|o| |b|o|r|d|e|r|║| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255|h|e|l@1|o| |p|a|d@1|i|n|g| | +0#0000000#ffffff0@4|║| @11|║| @18
+|4| |╚+0#0000001#ffd7ff255|═@11|╝| +0#0000000#ffffff0@5| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|║| |h|e|l@1|o| |b|o|t|h| |║| @18
+|5| @40|║| @11|║| @18
+|6| |╔+0#0000001#ffd7ff255|═@8| +0#0000000#ffffff0@9| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@4|╚|═@11|╝| @18
 |7| |║+0#0000001#ffd7ff255|b|o|r|d|e|r| |T|L| +0#0000000#ffffff0@9| +0#0000001#ffd7ff255@3|p|a|d@1|i|n|g|s| @2| +0#0000000#ffffff0@37
 |8| @20| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@12|║+0#0000001#ffd7ff255| @2|w|r|a|p@1|e|d| |l|o|n|g|e|r| |t|e| @2|║
 |9+0#0000000#ffffff0| @20| +0#0000001#ffd7ff255@14| +0#0000000#ffffff0@12|║+0#0000001#ffd7ff255| @2|x|t| @17|║
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index 5a841e3..8a58926 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -86,7 +86,7 @@
 	  call setline(1, range(1, 100))
 	  call popup_create('hello border', #{line: 2, col: 3, border: []})
 	  call popup_create('hello padding', #{line: 2, col: 23, padding: []})
-	  call popup_create('hello both', #{line: 2, col: 43, border: [], padding: []})
+	  call popup_create('hello both', #{line: 2, col: 43, border: [], padding: [], highlight: 'Normal'})
 	  call popup_create('border TL', #{line: 6, col: 3, border: [1, 0, 0, 4]})
 	  call popup_create('paddings', #{line: 6, col: 23, padding: [1, 3, 2, 4]})
 	  call popup_create('wrapped longer text', #{line: 8, col: 55, padding: [0, 3, 0, 3], border: [0, 1, 0, 1]})
diff --git a/src/version.c b/src/version.c
index 6904482..32759b1 100644
--- a/src/version.c
+++ b/src/version.c
@@ -774,6 +774,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1811,
+/**/
     1810,
 /**/
     1809,