patch 8.2.2111: GTK: menu background is the same color as the main window

Problem:    GTK: Menu background is the same color as the main window.
Solution:   Fix white space around the test in another way. (closes #7437,
            closes #7427)
diff --git a/src/version.c b/src/version.c
index 6580dbd..07dc6a2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2111,
+/**/
     2110,
 /**/
     2109,