Fixes this compile break that showed up on arm recently: dmxinit.c:746:26: error: 'glxSupported' undeclared (first use in this function) dmxinit.c:746:26: note: each undeclared identifier is reported only once for each function it appears in Signed-off-by: Rob Clark <robdclark@gmail.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>