App version update issue

[PVince81]

Steps

1. Checkout out OC master
2. Change info.xml of "files" app to say "1.5.3"
3. Open web browser, this would run any query
4. Check select * from oc_appconfig where configkey='installed_version' and appid='files';

Expected result

Version properly updated.

Actual result

Version not updated.

Turns out the code is setting the old value repeatedly, and this happens for every single request!