[gnome-settings-daemon/wip/hadess/remove-media-keys-dbus: 2/4] media-keys: Add guard to MPRIS controller code

[Bastien Nocera <hadess src gnome org>]

commit 3438be1e7e30c3969580ce99c97b3bd32fb10f30
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Oct 18 15:07:01 2021 +0200

    media-keys: Add guard to MPRIS controller code

 plugins/media-keys/mpris-controller.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/plugins/media-keys/mpris-controller.c b/plugins/media-keys/mpris-controller.c
index c70f0bc1..4fcbbf04 100644
--- a/plugins/media-keys/mpris-controller.c
+++ b/plugins/media-keys/mpris-controller.c
@@ -77,6 +77,9 @@ mpris_proxy_call_done (GObject      *object,
 gboolean
 mpris_controller_key (MprisController *self, const gchar *key)
 {
+  g_return_val_if_fail (MPRIS_IS_CONTROLLER (self), FALSE);
+  g_return_val_if_fail (key != NULL, FALSE);
+
   if (!self->mpris_client_proxy)
     return FALSE;