Mesa (master): Initialize have_back.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: d20fce057ee94fc3441c01a9e54cb5e19f7ddfd3
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d20fce057ee94fc3441c01a9e54cb5e19f7ddfd3

Author: Pierre Willenbrock <pierre at pirsoft.de>
Date:   Tue Apr 27 23:16:46 2010 +0200

Initialize have_back.

There is a user somewhere that tests it before its initial set.

Signed-off-by: Eric Anholt <eric at anholt.net>

---

 src/glx/dri2_glx.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index 9347611..73d11f1 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -194,6 +194,7 @@ dri2CreateDrawable(__GLXscreenConfigs * psc,
    pdraw->base.psc = psc;
    pdraw->bufferCount = 0;
    pdraw->swap_interval = 1; /* default may be overridden below */
+   pdraw->have_back = 0;
 
    if (psc->config)
       psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);