daemon:containerStart() fix unhandled error for saveApparmorConfig

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 1250e42a43e5c2dd3efbcbc20c7fa3804c3dc3fb)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

daemon/start.go

@@ -161,7 +161,7 @@ func (daemon *Daemon) containerStart(container *container.Container, checkpoint
 		container.HasBeenManuallyStopped = false
 	}
 
-	if daemon.saveApparmorConfig(container); err != nil {
+	if err := daemon.saveApparmorConfig(container); err != nil {
 		return err
 	}