patch 8.1.1511: matches in a popup window are not displayed properly

Problem:    Matches in a popup window are not displayed properly.
Solution:   Do display matches in a popup window. (closes #4517)
diff --git a/src/version.c b/src/version.c
index 79faf7b..97dc393 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1511,
+/**/
     1510,
 /**/
     1509,