vlc-video: Emit media ended signal regardless of loop setting

Makes the signal's behavior on-par with `obs_source_media_started`.
`obs_source_media_started` is emitted every time a file in the playlist
is played, and so therefore should `obs_source_media_ended`. In this
scenario, the loop setting is actually irrelevant to the behavior that
this signal should have.

plugins/vlc-video/vlc-video-source.c

@@ -737,9 +737,10 @@ static void vlcs_stopped(const struct libvlc_event_t *event, void *data)
 	struct vlc_source *c = data;
 	if (!c->loop) {
 		obs_source_output_video(c->source, NULL);
-		obs_source_media_ended(c->source);
 	}
 
+	obs_source_media_ended(c->source);
+
 	UNUSED_PARAMETER(event);
 }