#493 memory leak in ReadPCDImage

[bestshow]

Here is the critical code : (in ReadPCDImage)

  number_pixels=image->columns*image->rows; //619
  chroma1=MagickAllocateMemory(unsigned char *,number_pixels+1);
  chroma2=MagickAllocateMemory(unsigned char *,number_pixels+1);
  luma=MagickAllocateMemory(unsigned char *,number_pixels+1);
  if ((chroma1 == (unsigned char *) NULL) ||
      (chroma2 == (unsigned char *) NULL) || (luma == (unsigned char *) NULL))
    ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image);

If one of the “chroma1”,”chroma2”,”luma” is NULL at least，and others are not，this may cause memory leak。
Credit : ADLab of Venustech

[Bob Friesenhahn]

This problem is fixed by Mercurial changeset 15199:755359b1a5ac. Thanks for the report!