patch 9.0.1127: no error if function argument shadows class member

Problem:    No error if function argument shadows class member.
Solution:   Give an error for shadowing a class member.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1127,
 /**/
     1126,
 /**/