From dad2a9254b8dc518a0ad04e1823d28071fac8231 Mon Sep 17 00:00:00 2001
From: sfeng <ylsongfeng@gmail.com>
Date: Mon, 15 Dec 2014 03:20:39 +0800
Subject: [PATCH] Bug fix:Collection <__NSArrayM: > was mutated while being
 enumerated

---
 SDWebImage/SDImageCache.m | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/SDWebImage/SDImageCache.m b/SDWebImage/SDImageCache.m
index 36bb751a..967421cd 100644
--- a/SDWebImage/SDImageCache.m
+++ b/SDWebImage/SDImageCache.m
@@ -248,7 +248,8 @@ BOOL ImageDataHasPNGPreffix(NSData *data) {
         return data;
     }
 
-    for (NSString *path in self.customPaths) {
+    NSArray *customPaths = [self.customPaths copy];
+    for (NSString *path in customPaths) {
         NSString *filePath = [self cachePathForKey:key inPath:path];
         NSData *imageData = [NSData dataWithContentsOfFile:filePath];
         if (imageData) {