git-update: Close cursor before closing database

When using SQLite as backend, we need to close the cursor before closing
the database to avoid the following error:

    sqlite3.OperationalError: unable to close due to unfinalized statements or unfinished backups
Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

git-interface/git-update.py

@@ -402,4 +402,5 @@ repo.create_reference('refs/namespaces/' + pkgbase + '/HEAD', sha1_new, True)
 update_notify(conn, user, pkgbase_id)
 
 # Close the database.
+cur.close()
 conn.close()

git-interface/test/t0003-update.sh

@@ -368,7 +368,7 @@ test_expect_success 'Pushing a blacklisted package.' '
 	test_cmp expected actual
 '
 
-test_expect_failure 'Pushing a blacklisted package as Trusted User.' '
+test_expect_success 'Pushing a blacklisted package as Trusted User.' '
 	old=$(git -C aur.git rev-parse HEAD) &&
 	test_when_finished "git -C aur.git reset --hard $old" &&
 	echo "pkgname = forbidden" >>aur.git/.SRCINFO &&