[Tile-serving] [osm2pgsql] check for empty geometries before using geohash (#291)

[Sarah Hoffmann]

The geohash function on postgis 1.5. cannot handle empty geometries.

Just fixes the symptoms. Still need to find out why osm2pgsql is creating empty geometries in the first place.
You can view, comment on, or merge this pull request online at:

  https://github.com/openstreetmap/osm2pgsql/pull/291

-- Commit Summary --

  * check for empty geometries before using geohash

-- File Changes --

    M table.cpp (4)

-- Patch Links --

https://github.com/openstreetmap/osm2pgsql/pull/291.patch
https://github.com/openstreetmap/osm2pgsql/pull/291.diff

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Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/osm2pgsql/pull/291
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