db/DatabaseSong: make the Storage optional

Some database plugins don't use a Storage (e.g. UPnP), and with this plugin, DatabaseDetachSong() can crash.
2017-02-08 09:47:43 +01:00
parent f689e28958
commit 777e15bd78
9 changed files with 15 additions and 15 deletions
--- a/src/db/DatabaseQueue.cxx
+++ b/src/db/DatabaseQueue.cxx
@@ -30,7 +30,7 @@
 static void
 AddToQueue(Partition &partition, const LightSong &song)
 {
-	const Storage &storage = *partition.instance.storage;
+	const auto *storage = partition.instance.storage;
 	partition.playlist.AppendSong(partition.pc,
 				      DatabaseDetachSong(storage,
 							 song));