From f4f39d19898bb262db052dec9c09b1bac1cb6462 Mon Sep 17 00:00:00 2001
From: Yuxuan Shui <yshuiv7@gmail.com>
Date: Thu, 14 Jul 2016 15:32:45 -0400
Subject: [PATCH] Avoid changing fade_callback when window is destroyed

Fix assertion at src/compton.c:1261
---
 src/compton.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/compton.c b/src/compton.c
index 92935a3..df2b5ad 100644
--- a/src/compton.c
+++ b/src/compton.c
@@ -2277,6 +2277,8 @@ static void
 unmap_win(session_t *ps, win *w) {
   if (!w || IsUnmapped == w->a.map_state) return;
 
+  if (w->destroyed) return;
+
   // One last synchronization
   if (w->paint.pixmap)
     xr_sync(ps, w->paint.pixmap, &w->fence);