From 13da33fc4a6cc9767a1ea545e620772c21d94fbd Mon Sep 17 00:00:00 2001
From: Imanol Fernandez <mortimergoro@gmail.com>
Date: Sat, 27 Aug 2016 11:58:59 +0200
Subject: [PATCH] Fix issue #216: crash when combining programmatically created
 offset animations in consecutive block callbacks

---
 MGSwipeTableCell/MGSwipeTableCell.m | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/MGSwipeTableCell/MGSwipeTableCell.m b/MGSwipeTableCell/MGSwipeTableCell.m
index 3ac9c6b..ea39343 100644
--- a/MGSwipeTableCell/MGSwipeTableCell.m
+++ b/MGSwipeTableCell/MGSwipeTableCell.m
@@ -1105,8 +1105,9 @@ -(void) animationTick: (CADisplayLink *) timer
         [timer invalidate];
         _displayLink = nil;
         if (_animationCompletion) {
-            _animationCompletion(YES);
+            void (^callbackCopy)(BOOL finished) = _animationCompletion; //copy to avoid duplicated callbacks
             _animationCompletion = nil;
+            callbackCopy(YES);
         }
     }
 }
@@ -1123,8 +1124,9 @@ -(void) setSwipeOffset:(CGFloat)offset animation: (MGSwipeAnimation *) animation
         _displayLink = nil;
     }
     if (_animationCompletion) { //notify previous animation cancelled
-        _animationCompletion(NO);
+        void (^callbackCopy)(BOOL finished) = _animationCompletion; //copy to avoid duplicated callbacks
         _animationCompletion = nil;
+        callbackCopy(NO);
     }
     if (offset !=0) {
         [self createSwipeViewIfNeeded];