Fix 'locate in library' when MPD dir is not accessible.

ChangeLog

@@ -7,6 +7,9 @@
    don't expect much!). See README.
 4. Add Track Organizer dialog to Qt-only build.
 5. Disable 'Edit Tags' and 'Organize Files' actions if MPD dir is not readable.
+6. No need to check if playqueue song exists in MPD dir whe performing a
+   'locate in library'. Its possible that the configured MPD dir does not
+   exist - but 'locate in library' should still work.
 
 0.7.1
 -----

widgets/playqueueview.cpp

@@ -332,7 +332,7 @@ QList<Song> PlayQueueView::selectedSongs() const
 
     foreach (const QModelIndex &idx, selected) {
         Song song=idx.data(GroupedView::Role_Song).value<Song>();
-        if (!song.file.isEmpty() && !song.file.contains(":/") && !song.file.startsWith('/') && QFile::exists(Settings::self()->mpdDir()+song.file)) {
+        if (!song.file.isEmpty() && !song.file.contains(":/") && !song.file.startsWith('/')) {
             songs.append(song);
         }
     }