Don't crash when passing playlists

This happened when the openPlaylistDialog was closed before being
opened - Dialog.close would try to select(this.oldSelectedElement),
but of course that would be undefined since the dialog had never been
opened in the first place.

1 files changed, 4 insertions, 1 deletions

diff --git a/ui.js b/ui.js
index 755d95f..aaa877a 100644
--- a/ui.js
+++ b/ui.js
@@ -231,7 +231,10 @@ class AppElement extends FocusElement {
   }
 
   async handlePlaylistSource(source, newTab = false) {
-    this.openPlaylistDialog.close()
+    if (this.openPlaylistDialog.visible) {
+      this.openPlaylistDialog.close()
+    }
+
     this.alertDialog.showMessage('Opening playlist...', false)
 
     let grouplike