In ImageCache::read_untiled, there was a subtle bug in cases where the temporary buffer was not big enough to hold an integral number of tiles.
In ImageCache::read_untiled, there was a subtle bug in cases where the
temporary buffer was not big enough to hold an integral number of tiles.


git-svn-id: c3edda122e248ef33995da003806c930f62b9468@986 31904243-a364-42ac-a3db-9305396518ba

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