From 8cbc1517c1ba508dbf4d19f6eee729cdd1df8c37 Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Mon, 24 May 2010 16:19:21 -0600
Subject: [PATCH] st/glx: check if deleting head of buffer list

---
 src/gallium/state_trackers/glx/xlib/xm_api.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gallium/state_trackers/glx/xlib/xm_api.c b/src/gallium/state_trackers/glx/xlib/xm_api.c
index fc12a9a71f6..c0c418306fb 100644
--- a/src/gallium/state_trackers/glx/xlib/xm_api.c
+++ b/src/gallium/state_trackers/glx/xlib/xm_api.c
@@ -1184,6 +1184,10 @@ void xmesa_destroy_buffers_on_display(Display *dpy)
       next = b->Next;
       if (b->xm_visual->display == dpy) {
          xmesa_free_buffer(b);
+         /* delete head of list? */
+         if (XMesaBufferList == b) {
+            XMesaBufferList = next;
+         }
       }
    }
 }
-- 
2.30.2