Reject invalid sizes
Reject invalid sizes

I came across lots of logs regarding jit image trying to use 0 x 0 has their dimensions. Each time it happend, 13 log entries where recreated!!! This fix now exit early in that case, to prevent poluting the log.

avanteweb/jit_image_manipulation,avanteweb/jit_image_manipulation,DavidOliver/jit_image_manipulation,DavidOliver/jit_image_manipulation