Re-commit t_vertex.[ch] changes to fd.o server.
diff --git a/src/mesa/tnl/t_pipeline.c b/src/mesa/tnl/t_pipeline.c
index bfb8996..37ec84a 100644
--- a/src/mesa/tnl/t_pipeline.c
+++ b/src/mesa/tnl/t_pipeline.c
@@ -127,6 +127,9 @@
    unsigned short __tmp;
 #endif
 
+   if (!tnl->vb.Count)
+      return;
+
    pipe->run_state_changes = 0;
    pipe->run_input_changes = 0;