From be0791233c60ef27917cd0e6bd51136fa17bf04f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=8B=94=E8=90=9D=E5=8D=9C=E7=9A=84=E2=98=82Tank?=
 <zhaojiangming@gmail.com>
Date: Tue, 2 Jun 2015 20:23:40 +0800
Subject: [PATCH] Update UIImage+MultiFormat.m

fix <Error>: ImageIO: CGImageSourceCreateWithData data parameter is nil bug
---
 SDWebImage/UIImage+MultiFormat.m | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/SDWebImage/UIImage+MultiFormat.m b/SDWebImage/UIImage+MultiFormat.m
index 5395280..a830754 100644
--- a/SDWebImage/UIImage+MultiFormat.m
+++ b/SDWebImage/UIImage+MultiFormat.m
@@ -18,6 +18,10 @@
 @implementation UIImage (MultiFormat)
 
 + (UIImage *)sd_imageWithData:(NSData *)data {
+    if (!data) {
+        return nil;
+    }
+    
     UIImage *image;
     NSString *imageContentType = [NSData sd_contentTypeForImageData:data];
     if ([imageContentType isEqualToString:@"image/gif"]) {