#495 memory leak in hdf.c

[bestshow]

  hdf_pixels=MagickAllocateMemory(unsigned char *, //213
      packet_size*image->columns*image->rows);
    if (hdf_pixels == (unsigned char *) NULL)
      ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);
...
        if (!AllocateImageColormap(image,image->colors))
          ThrowReaderException(ResourceLimitError,MemoryAllocationFailed, //226
            image);
        hdf_palette=MagickAllocateMemory(unsigned char *,768);
        if (hdf_palette == (unsigned char *) NULL)
          ThrowReaderException(ResourceLimitError,MemoryAllocationFailed, //230
            image);
...
MagickFreeMemory(hdf_pixels);

Line 226,230 do not free memory about hdf_pixels, this will cause memory leak.

Credit: ADLab of Venustech

[Bob Friesenhahn]

This problem is fixed by Mercurial changeset 15201:8ee7cc3fd116. Thanks for the report!