Fix memory in QuadEdgeSubdivision (#604)

git-svn-id: http://svn.osgeo.org/geos/trunk@3835 5242fede-7e19-0410-aef8-94bd7d2200fb
Drop carriage returns

git-svn-id: http://svn.osgeo.org/geos/trunk@3836 5242fede-7e19-0410-aef8-94bd7d2200fb
Fix memory leak in testcase

git-svn-id: http://svn.osgeo.org/geos/trunk@3837 5242fede-7e19-0410-aef8-94bd7d2200fb