#491 memory leak in WriteGIFImage

[bestshow]

Here is the critical code : (in WriteGIFImage)

  global_colormap=MagickAllocateMemory(unsigned char *,768); //1295
  colormap=MagickAllocateMemory(unsigned char *,768);
  if ((global_colormap == (unsigned char *) NULL) ||
      (colormap == (unsigned char *) NULL))
    ThrowWriterException(ResourceLimitError,MemoryAllocationFailed,image);

The global_colormap and colormap are not freed before Exception, so it will cause memory leak.
Credit : ADLab of Venustech

[Bob Friesenhahn]

This problem is fixed by Mercurial changeset 15197:57ea336cefaa. Thanks for the report!