patch 8.1.1392: build failure in tiny version

Problem:    Build failure in tiny version.
Solution:   Define ex_popupclear to ex_ni if not implemented.  Add UNUSED.
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index c6e00be..9f127ec 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -397,6 +397,9 @@
 #if !defined(FEAT_X11) || !defined(FEAT_XCLIPBOARD)
 # define ex_xrestore		ex_ni
 #endif
+#if !defined(FEAT_TEXT_PROP)
+# define ex_popupclear		ex_ni
+#endif
 
 /*
  * Declare cmdnames[].
diff --git a/src/version.c b/src/version.c
index 5573f44..f8e1d45 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1392,
+/**/
     1391,
 /**/
     1390,
diff --git a/src/window.c b/src/window.c
index bed3d3f..4946a3a 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1363,7 +1363,7 @@
 }
 
     static int
-win_valid_popup(win_T *win)
+win_valid_popup(win_T *win UNUSED)
 {
 #ifdef FEAT_TEXT_PROP
     win_T	*wp;