svga: fix another pipe_reference strict aliasing violation

diff --git a/src/gallium/drivers/svga/svga_screen_buffer.c b/src/gallium/drivers/svga/svga_screen_buffer.c
index 1f8a889..58a1aba 100644 (file)
--- a/src/gallium/drivers/svga/svga_screen_buffer.c
+++ b/src/gallium/drivers/svga/svga_screen_buffer.c
@@ -356,7 +356,8 @@ svga_buffer_upload_flush(struct svga_context *svga,
    sbuf->hw.boxes = NULL;
 
    /* Decrement reference count */
-   pipe_buffer_reference((struct pipe_buffer **)&sbuf, NULL);
+   pipe_reference(&(sbuf->base.reference), NULL);
+   sbuf = NULL;
 }