From 4c057c57ae499b2fb458159bb33b678372169206 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Mon, 22 May 2023 17:46:08 +0200
Subject: Slightly improve Fl_Wayland_Window_Driver::flush()

---
 src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/drivers')

diff --git a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
index 3630ab06e..52c5fd7eb 100644
--- a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
@@ -399,7 +399,11 @@ void Fl_Wayland_Window_Driver::flush() {
   Fl_Wayland_Window_Driver::in_flush_ = true;
   Fl_Window_Driver::flush();
   Fl_Wayland_Window_Driver::in_flush_ = false;
-  if (window->buffer->cb) wl_callback_destroy(window->buffer->cb);
+  if (window->buffer->cb) {
+    wl_callback_destroy(window->buffer->cb);
+    window->buffer->cb = NULL;
+    r = NULL;
+  }
   Fl_Wayland_Graphics_Driver::buffer_commit(window, r);
 }
 
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