correction: o5m reader did called onAddNode() for each tag.
This caused multiple identical entries in the exits list.


git-svn-id: http://svn.mkgmap.org.uk/mkgmap/trunk@2503 25d90789-57f7-4ee0-8453-03a3dfeeeb22
adapt expected test value to change in highwayCount handling

git-svn-id: http://svn.mkgmap.org.uk/mkgmap/trunk@2504 25d90789-57f7-4ee0-8453-03a3dfeeeb22