From: Stefan Kangas <stefan@marxist.se>
Date: Thu, 14 Jul 2022 14:30:56 +0000 (+0200)
Subject: Silence unused variable warning in a build --without-all
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Silence unused variable warning in a build --without-all

* src/xfns.c (Fx_double_buffered_p): Silence unused variable warning
in a build --without-all.
---

diff --git a/src/xfns.c b/src/xfns.c
index 41a9d710d44..748ea10c952 100644
--- a/src/xfns.c
+++ b/src/xfns.c
@@ -8850,9 +8850,8 @@ DEFUN ("x-double-buffered-p", Fx_double_buffered_p, Sx_double_buffered_p,
        doc: /* Return t if FRAME is being double buffered.  */)
      (Lisp_Object frame)
 {
-  struct frame *f = decode_live_frame (frame);
-
 #ifdef HAVE_XDBE
+  struct frame *f = decode_live_frame (frame);
   return FRAME_X_DOUBLE_BUFFERED_P (f) ? Qt : Qnil;
 #else
   return Qnil;