app-misc/tracker: fix database upgrade from tracker-1

app-misc/tracker: fix database upgrade from tracker-1

Without the added patch tracker-store actually fails to upgrade
the database from tracker-1 times to tracker-2 and exits, thus
for users that had used tracker-1 already tracker-2 wouldn't
actually work at all. This patch fixes it for me at least.
This might only be a problem when upgrading from tracker-1 only
now, while having sqlite at v3.25 or newer, but this will be the
case for only main tree users.

Bug: https://bugs.gentoo.org/672308
Package-Manager: Portage-2.3.52, Repoman-2.3.12
Signed-off-by: Mart Raudsepp <leio@gentoo.org>