Fix a bug in GeonamesComparison

Fix a bug in GeonamesComparison:
It wasn't reporting existing known differences that had been fixed.

There are probably other bugs: the tool currently has no tests. Bug
1638007511 should not be closed until it is tested robustly.

Bug: 1638007511
Test: Ran run_compare.sh
Change-Id: Icaac2eb1893dc746425d79642c22c25ffe178ff8
4 files changed