[Tile-serving] [openstreetmap/osm2pgsql] Make some functions return void instead of int (#1021)

[Jochen Topf]

@joto pushed 1 commit.

cb21eef6f8b394633dd8829df17a55a05ef9bdfb  Remove useless return.


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View it on GitHub:
https://github.com/openstreetmap/osm2pgsql/pull/1021/files/691a78e42fc2b6e1876eee3ecabaa36bccdfea71..cb21eef6f8b394633dd8829df17a55a05ef9bdfb
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