Fix Coverity Scan issue CID 1520761: Integer handling issues...
Fix Coverity Scan issue CID 1520761: Integer handling issues (OVERFLOW_BEFORE_WIDEN) tiffcrop.c: 9676 in rotateImage()
Fix Coverity Scan issue CID 1520761: Integer handling issues (OVERFLOW_BEFORE_WIDEN) tiffcrop.c: 9676 in rotateImage()