dri: add _glapi_set_nop_handler(), _glapi_new_nop_table() to dri_test.c

I wasn't aware of these _glapi_ stub functions when I committed
4bdbb588a9d385509f9168e38bfdb76952ba469c.  Fixes "make check"

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89662
Reviewed-by: Mark Janes <mark.a.janes@intel.com>
1 file changed