Instance: add method Shutdown()

src/Instance.cxx

@@ -22,6 +22,7 @@
 #include "Partition.hxx"
 #include "Idle.hxx"
 #include "Stats.hxx"
+#include "event/Loop.hxx"
 #include "util/Error.hxx"
 
 #ifdef ENABLE_DATABASE
@@ -32,6 +33,15 @@
 #include "sticker/StickerDatabase.hxx"
 #include "sticker/SongSticker.hxx"
 #endif
+#endif
+
+void
+Instance::Shutdown()
+{
+	event_loop->Break();
+}
+
+#ifdef ENABLE_DATABASE
 
 Database *
 Instance::GetDatabase(Error &error)

src/Instance.hxx

@@ -76,6 +76,11 @@ struct Instance final
 
 	Partition *partition;
 
+	/**
+	 * Initiate shutdown.  Wrapper for EventLoop::Break().
+	 */
+	void Shutdown();
+
 #ifdef ENABLE_DATABASE
 	/**
 	 * Returns the global #Database instance.  May return nullptr

src/Main.cxx

@@ -393,7 +393,7 @@ idle_event_emitted(void)
 static void
 shutdown_event_emitted(void)
 {
-	instance->event_loop->Break();
+	instance->Shutdown();
 }
 
 #endif