[Tile-serving] [openstreetmap/osm2pgsql] Fix parsing of command line option "-e 12" (no expiry maxzoom given) (#832)

[Michael Reichert]

@Nakaner pushed 1 commit.

41fd21a  fix unit test


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View it on GitHub:
https://github.com/openstreetmap/osm2pgsql/pull/832/files/8a2038e85d91a9c94784ab694fcc00dac6784704..41fd21a9921a14b451e193ac1b1e0ff71f16bdfe
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