fix mem leaks

src/glx/x11/dri_glx.c

@@ -398,6 +398,7 @@ static void driDestroyDisplay(Display *dpy, void *private)
 		    else
 		       Drivers = driver->next;
 
+		    Xfree(driver->name);
 		    Xfree(driver);
 		    break;
 		 }

src/glx/x11/glxext.c

@@ -396,6 +396,10 @@ static int __glXFreeDisplayPrivate(XExtData *extension)
 	(*priv->driDisplay.destroyDisplay)(priv->dpy,
 					   priv->driDisplay.private);
     priv->driDisplay.private = NULL;
+    if (priv->driDisplay.createNewScreen) {
+        Xfree(priv->driDisplay.createNewScreen); /* free array of ptrs */
+        priv->driDisplay.createNewScreen = NULL;
+    }
 #endif
 
     Xfree((char*) priv);