MagickExport void *ResizeQuantumMemory(void *memory,const size_t count,
  const size_t quantum)
{
  size_t
    extent;

  if (HeapOverflowSanityCheck(count,quantum) != MagickFalse)
    {
      memory=RelinquishMagickMemory(memory);
      return((void *) NULL);
    }
  extent=count*quantum;
  return(ResizeMagickMemory(memory,extent));
}
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