Do not try to read pixels for 0-sized images when printing the SHA-1 info.
Do not try to read pixels for 0-sized images when printing the SHA-1 info.

cwilling/oiio,OpenImageIO/oiio,YangYangTL/oiio,sambler/oiio,scott-wilson/oiio,scott-wilson/oiio,scott-wilson/oiio,OpenImageIO/oiio,scott-wilson/oiio,lgritz/oiio,micler/oiio,sambler/oiio,cwilling/oiio,cwilling/oiio,YangYangTL/oiio,YangYangTL/oiio,OpenImageIO/oiio,YangYangTL/oiio,lgritz/oiio,sambler/oiio,bdeluca/oiio,bdeluca/oiio,sambler/oiio,micler/oiio,OpenImageIO/oiio,mcanthony/oiio,mcanthony/oiio,micler/oiio,micler/oiio,lgritz/oiio,mcanthony/oiio,bdeluca/oiio,lgritz/oiio,cwilling/oiio,bdeluca/oiio,mcanthony/oiio