tjbench.c: (Re)allow unreduced scaling factors For reasons I can't recall, fc01f4673b71c0b833c59c21e8c4478a9c4bcf21 (the TurboJPEG 3 API overhaul) changed the C version of TJBench, but not the Java version, so that it requires an exact scaling factor match (as opposed to allowing unreduced scaling factors, as djpeg does and prior versions of TJBench did.) That might have been temporary testing code that was accidentally committed.