[Tile-serving] [openstreetmap/osm2pgsql] This is just for appveyor comes from tilzen (#641)

[Yonggang Luo]

@lygstate pushed 2 commits.

9c16fae  Allow no columns for HSTORE_ALL mode
9000414  Guard against segfaults on expiry of empty diff


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View it on GitHub:
https://github.com/openstreetmap/osm2pgsql/pull/641/files/7229547ab5465f9f0bdd939e115fe2ab4bbd94d4..90004149c435cd5935288812d9d0c32dd9ab0337
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