cleanup: TABLE_LIST::view_check_option

don't prepare for checking view's CHECK OPTION, if
there is no CHECK OPTION in the first place.

sql/table.cc

@@ -4628,9 +4628,11 @@ void TABLE_LIST::cleanup_items()
 
 int TABLE_LIST::view_check_option(THD *thd, bool ignore_failure)
 {
+  if (check_option)
+  {
     Counting_error_handler ceh;
     thd->push_internal_handler(&ceh);
-  bool res= check_option && check_option->val_int() == 0;
+    bool res= check_option->val_int() == 0;
     thd->pop_internal_handler();
     if (ceh.errors)
       return(VIEW_CHECK_ERROR);
@@ -4648,6 +4650,7 @@ int TABLE_LIST::view_check_option(THD *thd, bool ignore_failure)
                main_view->view_name.str);
       return(VIEW_CHECK_ERROR);
     }
+  }
   return(VIEW_CHECK_OK);
 }