[Tile-serving] [osm2pgsql] Scan build analysis fixes (#424)

[Paul Norman]

Not ready for merging.

---
Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/osm2pgsql/pull/424#issuecomment-127440196
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tile-serving/attachments/20150803/b8a789da/attachment.html>