From: Cristy <urban-warrior@imagemagick.org>
Date: Sat, 30 Sep 2017 14:36:06 +0000 (-0400)
Subject: https://github.com/ImageMagick/ImageMagick/issues/808
X-Git-Tag: 7.0.7-5~19
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=24d5699753170c141b46816284430516c2d48fed;p=imagemagick

https://github.com/ImageMagick/ImageMagick/issues/808
---

diff --git a/coders/gif.c b/coders/gif.c
index a2bfe2f09..f68e31002 100644
--- a/coders/gif.c
+++ b/coders/gif.c
@@ -1562,7 +1562,14 @@ static MagickBooleanType WriteGIFImage(const ImageInfo *image_info,Image *image,
   colormap=(unsigned char *) AcquireQuantumMemory(768UL,sizeof(*colormap));
   if ((global_colormap == (unsigned char *) NULL) ||
       (colormap == (unsigned char *) NULL))
-    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
+    {
+      if (global_colormap != (unsigned char *) NULL)
+        global_colormap=(unsigned char *) RelinquishMagickMemory(
+          global_colormap);
+      if (colormap != (unsigned char *) NULL)
+        colormap=(unsigned char *) RelinquishMagickMemory(colormap);
+      ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
+    }
   for (i=0; i < 768; i++)
     colormap[i]=(unsigned char) 0;
   /*