patch 8.1.1380: MS-Windows building VIMDLL with MSVC: SUBSYSTEM is not set

Problem:    MS-Windows building VIMDLL with MSVC: SUBSYSTEM is not set.
Solution:   Invert condition. (closes #4422)
diff --git a/src/version.c b/src/version.c
index 60e6c82..f7fb44e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -768,6 +768,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1380,
+/**/
     1379,
 /**/
     1378,