修改代码中内存泄露的问题

_posts/2013/2013-03-11-core-text.md

@@ -201,6 +201,8 @@ callbacks的结构体为CTRunDelegateCallbacks，主要是包含一些回调函
     CTRunDelegateRef runDelegate = CTRunDelegateCreate(&imageCallbacks, taobaoImageName);
     NSMutableAttributedString *imageAttributedString = [[NSMutableAttributedString alloc] initWithString:@" "];//空格用于给图片留位置
     [imageAttributedString addAttribute:(NSString *)kCTRunDelegateAttributeName value:(id)runDelegate range:NSMakeRange(0, 1)];
+    CFRelease(runDelegate);
+    
     [imageAttributedString addAttribute:@"imageName" value:taobaoImageName range:NSMakeRange(0, 1)];
     
     [attributedString insertAttributedString:imageAttributedString atIndex:1];
@@ -251,6 +253,10 @@ callbacks的结构体为CTRunDelegateCallbacks，主要是包含一些回调函
             }
         }
     }
+    
+    CFRelease(ctFrame);
+    CFRelease(path);
+    CFRelease(ctFramesetter);
 }
 {% endhighlight %}