patch 8.2.4138: Vim9: no error for return with argument when invalid

Problem:    Vim9: no error for return with argument when the function does not
            return anything.
Solution:   Give an error for the invalid argument. (issue #9497)
diff --git a/src/version.c b/src/version.c
index 67e9ca5..6198d41 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4138,
+/**/
     4137,
 /**/
     4136,