zzogl: fix compilation issue with mesa10


git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5772 96395faa-99c1-11dd-bbfe-3dabce05a288
fix zzogl-cg too


git-svn-id: http://pcsx2.googlecode.com/svn/trunk@5773 96395faa-99c1-11dd-bbfe-3dabce05a288