From f136a4bf7c65894acbf491cad8d5298662ba4cd1 Mon Sep 17 00:00:00 2001
From: Philipp Stephani <phst@google.com>
Date: Wed, 2 Jan 2019 18:56:49 +0100
Subject: [PATCH] Avoid a compiler warning on macOS.

* src/xdisp.c (expose_window_tree): Define variable f only if used.
---
 src/xdisp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/xdisp.c b/src/xdisp.c
index f6f75f321c4..8b091c81bef 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -32390,7 +32390,9 @@ expose_window (struct window *w, XRectangle *fr)
 static bool
 expose_window_tree (struct window *w, XRectangle *r)
 {
+#ifndef HAVE_NS
   struct frame *f = XFRAME (w->frame);
+#endif
   bool mouse_face_overwritten_p = false;
 
   /* NS toolkits may have aleady modified the frame in expectation of
-- 
2.39.5