From fd263041a00deb648c2e27daac942e86621b2855 Mon Sep 17 00:00:00 2001
From: choc <notchoc@proton.me>
Date: Wed, 10 Jan 2024 22:27:04 +0800
Subject: [PATCH] check if monitor is null before setting gamma

fixes segfault on monitor disconnect when using wlsunset
---
 dwl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dwl.c b/dwl.c
index 632dabf..a20c607 100644
--- a/dwl.c
+++ b/dwl.c
@@ -2076,6 +2076,8 @@ setgamma(struct wl_listener *listener, void *data)
 {
 	struct wlr_gamma_control_manager_v1_set_gamma_event *event = data;
 	Monitor *m = event->output->data;
+	if (!m)
+		return;
 	m->gamma_lut_changed = 1;
 	wlr_output_schedule_frame(m->wlr_output);
 }