patch 8.1.1440: win_execute() test fails

Problem:    Win_execute() test fails.
Solution:   Adjust the expected error number.  Move to popup test.
diff --git a/src/version.c b/src/version.c
index 30c0831..96571af 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1440,
+/**/
     1439,
 /**/
     1438,