[cogl] winsys-glx: Fix swap region to remain disabled for old mesa

[Adel Gadllah <agadllah src gnome org>]

commit 0548757e187bca45b6887b043a97b7692b2ef07d
Author: Adel Gadllah <adel gadllah gmail com>
Date:   Mon Jan 6 21:54:56 2014 +0100

    winsys-glx: Fix swap region to remain disabled for old mesa
    
    Commit a750f80c6aaa was supposed to enable it for newer mesa but was wrong,
    fix that.

 cogl/winsys/cogl-winsys-glx.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/winsys/cogl-winsys-glx.c b/cogl/winsys/cogl-winsys-glx.c
index c23f58d..a2d11ba 100644
--- a/cogl/winsys/cogl-winsys-glx.c
+++ b/cogl/winsys/cogl-winsys-glx.c
@@ -826,7 +826,7 @@ update_winsys_features (CoglContext *context, CoglError **error)
            arch == COGL_GPU_INFO_ARCHITECTURE_SWRAST))
        {
          COGL_FLAGS_SET (context->winsys_features,
-                         COGL_WINSYS_FEATURE_SWAP_REGION, TRUE);
+                         COGL_WINSYS_FEATURE_SWAP_REGION, FALSE);
        }
     }