ImageMagick has a heap buffer over-read via 32-bit integer overflow in MAT decoder

In MAT decoder uses 32-bit arithmetic due to incorrect parenthesization resulting in a heap over-read. ================================================================= ==969652==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x506000003b40 at pc 0x555557b2a926 bp 0x7fffffff4c80 sp...