AcquireBlock      493 magick/memory.c   memory=AcquireBlock(size == 0 ? 1UL : size);
AcquireBlock      497 magick/memory.c         memory=AcquireBlock(size == 0 ? 1UL : size);
AcquireBlock     1134 magick/memory.c     return(AcquireBlock(size));
AcquireBlock     1135 magick/memory.c   memory=AcquireBlock(size);