patch 8.2.3650: Vim9: for loop variable can be a list member
Problem: Vim9: for loop variable can be a list member.
Solution: Check for valid variable name. (closes #9179)
diff --git a/src/proto/evalvars.pro b/src/proto/evalvars.pro
index 58c1222..778506f 100644
--- a/src/proto/evalvars.pro
+++ b/src/proto/evalvars.pro
@@ -78,7 +78,7 @@
int var_check_fixed(int flags, char_u *name, int use_gettext);
int var_wrong_func_name(char_u *name, int new_var);
int value_check_lock(int lock, char_u *name, int use_gettext);
-int valid_varname(char_u *varname, int autoload);
+int valid_varname(char_u *varname, int len, int autoload);
void reset_v_option_vars(void);
void assert_error(garray_T *gap);
int var_exists(char_u *var);