glx: fix build with APPLEGL

fixes: 1eab7e69e2

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8885
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22621>

src/glx/glxext.c

@@ -812,11 +812,12 @@ AllocAndFetchScreenConfigs(Display * dpy, struct glx_display * priv)
 	 psc = priv->driswDisplay->createScreen(i, priv);
 #endif /* GLX_DIRECT_RENDERING && !GLX_USE_APPLEGL */
 
+      bool indirect = false;
+
 #if defined(GLX_USE_APPLEGL)
       if (psc == NULL)
          psc = applegl_create_screen(i, priv);
 #else
-      bool indirect = false;
       if (psc == NULL)
       {
          psc = indirect_create_screen(i, priv);