<p>Includes refactoring of duplicated code into functions, removal of remaining deletes and some code style cleanup. Refer to individual commits for more information.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/openstreetmap/osm2pgsql/pull/501'>https://github.com/openstreetmap/osm2pgsql/pull/501</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>use default constructor/destructor for geometry builder</li>
  <li>move string conversion of geos geometries into wkt_t constructor</li>
  <li>move duplicated code into static functions</li>
  <li>simplify setup of polygondata vector</li>
  <li>minimize variable scopes and coding style cleanup</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/501/files#diff-0">expire-tiles.cpp</a>
    (2)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/501/files#diff-1">geometry-builder.cpp</a>
    (532)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/501/files#diff-2">geometry-builder.hpp</a>
    (34)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/openstreetmap/osm2pgsql/pull/501/files#diff-3">processor-point.cpp</a>
    (15)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/openstreetmap/osm2pgsql/pull/501.patch'>https://github.com/openstreetmap/osm2pgsql/pull/501.patch</a></li>
  <li><a href='https://github.com/openstreetmap/osm2pgsql/pull/501.diff'>https://github.com/openstreetmap/osm2pgsql/pull/501.diff</a></li>
</ul>

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