防止多次创建timer review by 洛克

@@ -482,7 +482,9 @@
     dispatch_async(dispatch_get_main_queue(), ^{
         if (tag == 1) {//登录成功了之后才继续后面的。。。。
             [self socketSendEndNotify];
-            _socketTimer = [NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(socketSendEndNotify) userInfo:nil repeats:YES];
+            if(_socketTimer == nil){
+                _socketTimer = [NSTimer scheduledTimerWithTimeInterval:5 target:self selector:@selector(socketSendEndNotify) userInfo:nil repeats:YES];
+            }
         }
     });
 }