[mutter/wip/carlosg/picking-fixes: 1/4] backends: Disconnect MetaInputMapper signal connection on device dispose

[Marge Bot <marge-bot src gnome org>]

commit 96820a9979219b1d087d30f4cbc81abd376e4f29
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Dec 28 17:00:46 2020 +0100

    backends: Disconnect MetaInputMapper signal connection on device dispose
    
    This signal may be left dangling when disconnecting a device, and be executed
    later on if the device is connected again, and mapped to other output. Make it
    sure the signal handler is disconnected when unplugging the device.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1657>

 src/backends/meta-input-mapper.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/backends/meta-input-mapper.c b/src/backends/meta-input-mapper.c
index 756cd1126f..df21ff71bf 100644
--- a/src/backends/meta-input-mapper.c
+++ b/src/backends/meta-input-mapper.c
@@ -189,6 +189,7 @@ mapper_input_info_new (ClutterInputDevice *device,
 static void
 mapper_input_info_free (MetaMapperInputInfo *info)
 {
+  g_signal_handlers_disconnect_by_func (info->settings, settings_output_changed_cb, info);
   g_object_unref (info->settings);
   g_free (info);
 }