patch 7.4.1381

Problem:    Exit value not available on MS-Windows.
Solution:   Set the exit value.

src/version.c

@@ -747,6 +747,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1381,
 /**/
     1380,
 /**/