From 974141f5a279151f2016ccc9269b7f2918223375 Mon Sep 17 00:00:00 2001
From: Aleksandr Sychev <a.sychev@rambler-co.ru>
Date: Mon, 15 Feb 2016 18:45:57 +0300
Subject: [PATCH] [fix] Issue #1423

---
 SDWebImage/SDWebImageDecoder.m | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/SDWebImage/SDWebImageDecoder.m b/SDWebImage/SDWebImageDecoder.m
index a7c02468..2d3b5e26 100644
--- a/SDWebImage/SDWebImageDecoder.m
+++ b/SDWebImage/SDWebImageDecoder.m
@@ -19,6 +19,11 @@
     // when there are memory warning.
     // on iOS7, do not forget to call
     // [[SDImageCache sharedImageCache] clearMemory];
+
+    if (image == nil) { // Prevent "CGBitmapContextCreateImage: invalid context 0x0" error
+        return nil;
+    }
+
     @autoreleasepool{
         // do not decode animated images
         if (image.images) { return image; }