ImageMagick has an Out-of-bounds Write via InterpretImageFilename

Due to an incorrect return value on certain platforms a pointer is incremented past the end of a buffer that is on the stack and that could result in an out of bounds write.

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==48558==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x00016b9b7490 at pc 0x0001046d48ac bp 0x00016b9b31d0 sp 0x00016b9b31c8
WRITE of size 1 at 0x00016b9b7490 thread T0