Additional TIFF IOProxy bug fix -- we don't want a full init inside open (#3077)
Additional TIFF IOProxy bug fix -- we don't want a full init inside open (#3077)

Calling close() in open will forget too much state. All we want to do
here is make sure the TIFF file itself is closed at that point (so it
can be re-opened in append mode to add a subsequent subimage).
lgritz/oiio,OpenImageIO/oiio,OpenImageIO/oiio,lgritz/oiio,OpenImageIO/oiio,lgritz/oiio,OpenImageIO/oiio,lgritz/oiio