[PATCH] Fix present_pixmap when using present_notify_msc

[Axel Davy]

Calling present_notify_msc could cancel a pending pixmap presentation.

Signed-off-by: Axel Davy <axel.davy at ens.fr>
---
 present/present.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/present/present.c b/present/present.c
index e838da7..47566c7 100644
--- a/present/present.c
+++ b/present/present.c
@@ -767,7 +767,7 @@ present_pixmap(WindowPtr window,
      * in the same frame
      */
 
-    if (!update) {
+    if (!update && pixmap) {
         xorg_list_for_each_entry_safe(vblank, tmp, &window_priv->vblank, window_list) {
 
             if (!vblank->pixmap)
-- 
1.9.1