patch 8.1.1810: popup_getoptions() is missing an entry for "mapping"

Problem:    Popup_getoptions() is missing an entry for "mapping".
Solution:   Add the entry.
diff --git a/src/popupwin.c b/src/popupwin.c
index f2297f5..ca75181 100644
--- a/src/popupwin.c
+++ b/src/popupwin.c
@@ -2319,6 +2319,7 @@
 	dict_add_string(dict, "title", wp->w_popup_title);
 	dict_add_number(dict, "wrap", wp->w_p_wrap);
 	dict_add_number(dict, "drag", (wp->w_popup_flags & POPF_DRAG) != 0);
+	dict_add_number(dict, "mapping", (wp->w_popup_flags & POPF_MAPPING) != 0);
 	dict_add_number(dict, "resize", (wp->w_popup_flags & POPF_RESIZE) != 0);
 	dict_add_number(dict, "cursorline",
 				   (wp->w_popup_flags & POPF_CURSORLINE) != 0);
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index e5d1631..5a841e3 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -946,6 +946,7 @@
   call assert_equal(21, res.maxheight)
   call assert_equal(100, res.zindex)
   call assert_equal(1, res.fixed)
+  call assert_equal(1, res.mapping)
   if has('timers')
     call assert_equal(5000, res.time)
   endif
diff --git a/src/version.c b/src/version.c
index 83c11ab..6904482 100644
--- a/src/version.c
+++ b/src/version.c
@@ -774,6 +774,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1810,
+/**/
     1809,
 /**/
     1808,