From 3fe31ccafb32ab84e394a64874ad22ac146de587 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rodrigo=20Garci=CC=81a=20S?= <rod@rodrigogarcia.net>
Date: Tue, 30 Apr 2013 12:21:16 -0400
Subject: [PATCH] Fixes a case when animationDidStop: is called and nextView
 has already set to nil.

---
 CubeFlip/RSCubeView.m | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CubeFlip/RSCubeView.m b/CubeFlip/RSCubeView.m
index b6a7078..8333845 100644
--- a/CubeFlip/RSCubeView.m
+++ b/CubeFlip/RSCubeView.m
@@ -292,7 +292,10 @@ - (void)animationDidStart:(CAAnimation *)animation {
 
 - (void)animationDidStop:(CAAnimation *)animation finished:(BOOL)finished {
 	
-	isAnimating = NO;
+	if (!isAnimating)
+        return;
+    
+    isAnimating = NO;
     self.contentView = nextView;
     
     [animationLayer removeFromSuperlayer];