patch 9.0.1631: passing wrong variable type to option gives multiple errors

Problem:    Passing a wrong variable type to an option gives multiple errors.
Solution:   Bail out early on failure. (closes #12504)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1631,
 /**/
     1630,
 /**/