Previously we handled all sizes as unsigned, but Windows BMP files can have negative height to signal top-down images.
No clue about left-right (would be trivial to swap as well, but found no info so far if that would be correct)
Also casting away some new compile warning in gcc for COBJMeshFileLoader
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6558 dfc29bdd-3216-0410-991c-e03cc46cb475
Thanks @sfan5 for the original patch (got modified a bit): dbd39120e7
Forum: https://irrlicht.sourceforge.io/forum/viewtopic.php?f=2&t=52819&p=306518
Those are the common formats, but rest of image loaders should also call this some day.
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6387 dfc29bdd-3216-0410-991c-e03cc46cb475