patch 8.1.1128: getwinpos() test does not work on MS-Windows

Problem:    getwinpos() test does not work on MS-Windows.
Solution:   Skip the test.
diff --git a/src/version.c b/src/version.c
index dfc986e..51ae14c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1128,
+/**/
     1127,
 /**/
     1126,