Mesa (master): glx: Add missing null check in __glX_send_client_info()

[Brian Paul]

Module: Mesa
Branch: master
Commit: d530745169282469b2dd8221629ef948ff31bcf3
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d530745169282469b2dd8221629ef948ff31bcf3

Author: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Date:   Fri Feb  7 14:44:03 2014 +0200

glx: Add missing null check in __glX_send_client_info()

Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila at gmail.com>
Reviewed-by: Brian Paul <brianp at vmware.com>

---

 src/glx/clientinfo.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/glx/clientinfo.c b/src/glx/clientinfo.c
index e90fd79..8f3fdeb 100644
--- a/src/glx/clientinfo.c
+++ b/src/glx/clientinfo.c
@@ -113,6 +113,10 @@ __glX_send_client_info(struct glx_display *glx_dpy)
    }
 
    gl_extension_string = __glXGetClientGLExtensionString();
+   if (gl_extension_string == NULL) {
+      return;
+   }
+
    gl_extension_length = strlen(gl_extension_string) + 1;
 
    c = XGetXCBConnection(glx_dpy->dpy);