Fixes the following segmentation fault: radeon_drm_cs_add_buffer (bo=0x0) at radeon_drm_cs.c -> if (!bo->handle) (gdb) bt 0 radeon_drm_cs_add_buffer (bo=0x0) at radeon_drm_cs.c 1 0x00007fffe73575de in radeon_cs_create_fence radeon_drm_cs.c 2 0x00007fffe7358c48 in radeon_drm_cs_flush radeon_drm_cs.c Signed-off-by: Julien Isorce <jisorce@oblong.com> Signed-off-by: Marek Olšák <marek.olsak@amd.com>