radv: Fix timeline semaphore refcounting.
Was totally broken ...
Removed two if(point) {} because point is always non-NULL and we
were counting on that already for counting, since we NULL our
references to semaphores without active point earlier.
Fixes:
4aa75bb3bdd "radv: Add wait-before-submit support for timelines."
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2137
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
(cherry picked from commit
48fc65413c8607390b2ed8cdaccac490d8c8fdae)