add nil protect

yulingtianxia · Jan 22, 2019 · 6bd1e15 · 6bd1e15
1 parent ad686b4
commit 6bd1e15
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/MessageThrottle/MessageThrottle.m b/MessageThrottle/MessageThrottle.m
@@ -351,7 +351,9 @@ - (void)savePersistentRules
         NSMutableSet *selectors = [self.targetSELs objectForKey:target];
         for (NSString *selectorName in selectors) {
             MTDealloc *mtDealloc = objc_getAssociatedObject(target, NSSelectorFromString(selectorName));
-            [rules addObject:mtDealloc.rule];
+            if (mtDealloc.rule) {
+                [rules addObject:mtDealloc.rule];
+            }
         }
     }
     pthread_mutex_unlock(&mutex);