TIFFFetchDirectory(): remove useless allocsize vs filesize check
CoverityScan rightly points that the max value for dircount16 * dirsize is 4096 * 20. That's small enough not to do any check
CC @Su_Laus
CoverityScan rightly points that the max value for dircount16 * dirsize is 4096 * 20. That's small enough not to do any check
CC @Su_Laus