The favicons are located in the file favicons.sqlite file since FF 37 and the old table was removed in FF 41 resulting in crashes because the table wasn't found.
- Update SQL to match the tables in FF 58
- query.bindValue() needs a double colon in the string, see https://doc.qt.io/qt-5/qsqlquery.html#prepare
- Fix intendation (tab->spaces) in one line
BUG: 363136