Fixed bug in halfedge normal computation, where a boundary halfedge was not correctly handled and caused a segfault.
Fixed bug in halfedge normal computation, where a boundary halfedge was not correctly handled and caused a segfault.



git-svn-id: b66b41e514ff40863ef1aa95df2dbf63dd8d6be1@599 fdac6126-5c0c-442c-9429-916003d36597

ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine,ColinGilbert/noobwerkz-engine