11972 resync smatch

@@ -29,30 +29,40 @@
 {
         int arg;
 
         if (!option_info)
                 return;
-        if (__in_fake_assign || __in_fake_parameter_assign || __in_function_def)
+
+        if (__in_fake_assign || __in_fake_parameter_assign || __in_function_def || __in_unmatched_hook)
                 return;
 
         arg = get_param_num_from_sym(sym);
-        if (arg >= 0)
+        if (arg < 0)
+                return;
+        if (param_was_set_var_sym(name, sym))
+                return;
                 set_state_stree(&used_stree, my_id, name, sym, &used);
 }
 
 static void set_param_used(struct expression *call, struct expression *arg, char *key, char *unused)
 {
         struct symbol *sym;
         char *name;
         int arg_nr;
 
+        if (!option_info)
+                return;
+
         name = get_variable_from_key(arg, key, &sym);
         if (!name || !sym)
                 goto free;
 
         arg_nr = get_param_num_from_sym(sym);
-        if (arg_nr >= 0)
+        if (arg_nr < 0)
+                goto free;
+        if (param_was_set_var_sym(name, sym))
+                goto free;
                 set_state_stree(&used_stree, my_id, name, sym, &used);
 free:
         free_string(name);
 }