patch 8.1.1266: winbar test doesn't test enough

Problem:    Winbar test doesn't test enough.
Solution:   Check that the WinBar actually shows up.  Correct check for clicks
            with no effect. (Ben Jackson, closes #4338)
diff --git a/src/version.c b/src/version.c
index 3edde60..8458a81 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1266,
+/**/
     1265,
 /**/
     1264,