patch 9.0.1569: cannot use "this.member" in lambda in class method

Problem:    Cannot use "this.member" in lambda in class method.
Solution:   Adjust check for reserved keyword. (Hirohito Higashi,
            closes #12416, closes #12076, closes #12336)
diff --git a/src/proto/vim9script.pro b/src/proto/vim9script.pro
index 9a0bcdf..1608255 100644
--- a/src/proto/vim9script.pro
+++ b/src/proto/vim9script.pro
@@ -19,5 +19,5 @@
 void hide_script_var(scriptitem_T *si, int idx, int func_defined);
 svar_T *find_typval_in_script(typval_T *dest, scid_T sid, int must_find);
 int check_script_var_type(svar_T *sv, typval_T *value, char_u *name, where_T where);
-int check_reserved_name(char_u *name, cctx_T *cctx);
+int check_reserved_name(char_u *name, int is_objm_access);
 /* vim: set ft=c : */