gallium/xlib: return 0 for errorBase, eventBase in glXQueryExtension()

A little better than leaving the values undefined, I think.
See bug 24321.

1 files changed, 5 insertions, 3 deletions

diff --git a/src/gallium/state_trackers/glx/xlib/glx_api.c b/src/gallium/state_trackers/glx/xlib/glx_api.c
index 6cd7ede31cf..3277ff58a6c 100644
--- a/src/gallium/state_trackers/glx/xlib/glx_api.c
+++ b/src/gallium/state_trackers/glx/xlib/glx_api.c
@@ -1309,12 +1309,14 @@ glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
 
 
 Bool
-glXQueryExtension( Display *dpy, int *errorb, int *event )
+glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
 {
    /* Mesa's GLX isn't really an X extension but we try to act like one. */
    (void) dpy;
-   (void) errorb;
-   (void) event;
+   if (errorBase)
+      *errorBase = 0;
+   if (eventBase)
+      *eventBase = 0;
    return True;
 }