glx: free driScreen in FreeScreenConfigs()

diff --git a/src/glx/x11/glxext.c b/src/glx/x11/glxext.c
index 5844c3f..0d6d25e 100644 (file)
--- a/src/glx/x11/glxext.c
+++ b/src/glx/x11/glxext.c
@@ -170,10 +170,13 @@ static void FreeScreenConfigs(__GLXdisplayPrivate *priv)
        if (psc->driScreen) {
            psc->driScreen->destroyScreen(psc);
            __glxHashDestroy(psc->drawHash);
+            XFree(psc->driScreen);
+            psc->driScreen = NULL;
        }
 #endif
     }
     XFree((char*) priv->screenConfigs);
+    priv->screenConfigs = NULL;
 }
 
 /*