gallium: Fix warning in u_draw_quad.h

diff --git a/src/gallium/auxiliary/util/u_draw_quad.h b/src/gallium/auxiliary/util/u_draw_quad.h
index 5b6539a99ca71d10582677e9d35bfb332b8d62b8..ec4862ead39f1534a5be8b9332a9d247aa488ce5 100644 (file)
--- a/src/gallium/auxiliary/util/u_draw_quad.h
+++ b/src/gallium/auxiliary/util/u_draw_quad.h
@@ -33,6 +33,7 @@
 extern "C" {
 #endif
 
+struct pipe_buffer;
 
 extern void 
 util_draw_vertex_buffer(struct pipe_context *pipe,