vbo: replace assert(0) with proper assertions

diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c
index f8be83ea84eb72106e8002bbcbb316a7d6f9618f..38c86516ad8217647f8a7ec6245d623900435947 100644 (file)
--- a/src/mesa/vbo/vbo_exec_draw.c
+++ b/src/mesa/vbo/vbo_exec_draw.c
@@ -301,11 +301,8 @@ vbo_exec_vtx_map( struct vbo_exec_context *exec )
    if (!_mesa_is_bufferobj(exec->vtx.bufferobj))
       return;
 
-   if (exec->vtx.buffer_map != NULL) {
-      assert(0);
-      exec->vtx.buffer_map = NULL;
-      exec->vtx.buffer_ptr = NULL;
-   }
+   assert(!exec->vtx.buffer_map);
+   assert(!exec->vtx.buffer_ptr);
 
    if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
        ctx->Driver.MapBufferRange) {