Mesa (master): glx: declare glx_screen struct to silence warning

[Brian Paul]

Module: Mesa
Branch: master
Commit: 944eebbdb4ea9dd8283f83ade01110be9bf2bba7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=944eebbdb4ea9dd8283f83ade01110be9bf2bba7

Author: Brian Paul <brianp at vmware.com>
Date:   Mon Nov 11 08:12:05 2013 -0700

glx: declare glx_screen struct to silence warning

---

 src/glx/dri2.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/glx/dri2.h b/src/glx/dri2.h
index c404a3a..90efde8 100644
--- a/src/glx/dri2.h
+++ b/src/glx/dri2.h
@@ -45,6 +45,8 @@ typedef struct
    unsigned int flags;
 } DRI2Buffer;
 
+struct glx_screen;
+
 extern Bool
 DRI2QueryExtension(Display * display, int *eventBase, int *errorBase);