mesa: add extra null checks in vbo_rebase_prims()
v2 [idr]: Move declarations before code to prevent MSVC build breaks. Signed-off-by:Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Reviewed-by:
Matt Turner <mattst88@gmail.com> Signed-off-by:
Ian Romanick <ian.d.romanick@intel.com>