#1 crash with radeon mobility 7x00

[Julien Perrier-cornet]

glSilent crashes when running on radeon mobility
equipped laptops. tested on 7x00 laptops, no idea if
there are issues with radeon 9x00 mobility chipsets.

issue: The driver crashes on the first indice provided
by glDrawElements. Tried to make the loop with the
equivalent glBegin / glArrayElement / glEnd code, and
it crashes on the first indice (glArrayElement call) as
well.