Recent list some times can not be cleared, database is locked

[Victor Thompson]

In both the devel-proposed image #64 on mako and also on my Utopic desktop, it seems that sometimes the user can cause the Recent list to be unable to be deleted. The console error is:

file:///opt/click.ubuntu.com/com.ubuntu.music/2.0.782/meta-database.js:226: Error: database table is locked Unable to fetch row

This error occurs when the table is being dropped.

To reproduce:

1. Navigate to the Recent tab and clear it by tapping the trash can icon in the upper right hand corner.
2. Navigate to the Albums tab and select any album
3. Tap any track to play that album and add it to your Recent list
4. Tap back
5. Tap back
6. Navigate to the Recent tab and clear it by tapping the trash can icon in the upper right hand corner.

Note: You may need to repeat these steps 2 or 3 times to get it to fail.

Expected results: The view clears itself

Actual results: The action does nothing and the view remains populated, resulting from the app producing the console output mentioned above.

[Ubuntu Phone Apps Jenkins Bot (ubuntu-phone-apps-jenkins-bot)]

Fix committed into lp:music-app at revision None, scheduled for release in music-app, milestone music-app-14.10-week-40