From afe760cc029e9c53af3bd9830bf7f6a2256f6e48 Mon Sep 17 00:00:00 2001
From: Galvin Li <b02437@gmail.com>
Date: Sun, 28 Sep 2014 10:50:41 +0800
Subject: [PATCH] observer leak bug fix

fix a observer leak if the developer set the show status to YES before
add the handler.
---
 SVPullToRefresh/UIScrollView+SVInfiniteScrolling.m | 4 ++++
 SVPullToRefresh/UIScrollView+SVPullToRefresh.m     | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/SVPullToRefresh/UIScrollView+SVInfiniteScrolling.m b/SVPullToRefresh/UIScrollView+SVInfiniteScrolling.m
index e43490ec..ab9e38f9 100644
--- a/SVPullToRefresh/UIScrollView+SVInfiniteScrolling.m
+++ b/SVPullToRefresh/UIScrollView+SVInfiniteScrolling.m
@@ -83,6 +83,10 @@ - (SVInfiniteScrollingView *)infiniteScrollingView {
 }
 
 - (void)setShowsInfiniteScrolling:(BOOL)showsInfiniteScrolling {
+    
+    if (!self.infiniteScrollingView)
+        return;
+    
     self.infiniteScrollingView.hidden = !showsInfiniteScrolling;
     
     if(!showsInfiniteScrolling) {
diff --git a/SVPullToRefresh/UIScrollView+SVPullToRefresh.m b/SVPullToRefresh/UIScrollView+SVPullToRefresh.m
index ba19078c..e74b358c 100644
--- a/SVPullToRefresh/UIScrollView+SVPullToRefresh.m
+++ b/SVPullToRefresh/UIScrollView+SVPullToRefresh.m
@@ -115,6 +115,10 @@ - (SVPullToRefreshView *)pullToRefreshView {
 }
 
 - (void)setShowsPullToRefresh:(BOOL)showsPullToRefresh {
+    
+    if (!self.pullToRefreshView)
+        return;
+    
     self.pullToRefreshView.hidden = !showsPullToRefresh;
     
     if(!showsPullToRefresh) {