Protect IC::get_image_info against out-of-range subimage or miplevel. (1672)
Protect IC::get_image_info against out-of-range subimage or miplevel. (1672)

Fixes #1670

OpenImageIO/oiio,lgritz/oiio,OpenImageIO/oiio,OpenImageIO/oiio,OpenImageIO/oiio,lgritz/oiio,lgritz/oiio,lgritz/oiio