Fixed Coverity reported issue.
Fixed Coverity reported issue.

CID 11828: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member distance is not initialized in this constructor nor in any functions that it calls.
Non-static class member maxDistance is not initialized in this constructor nor in any functions that it calls.
Non-static class member numIntersectionPoints is not initialized in this constructor nor in any functions that it calls.
Non-static class member primitiveIndex is not initialized in this constructor nor in any functions that it calls.



openscenegraph/osg,artoolkit/osg,artoolkit/osg,jtorresfabra/osg,tomasthoresen/osg,scrawl/osg,openscenegraph/osg,tomasthoresen/osg,jtorresfabra/osg,tomasthoresen/osg,tomasthoresen/osg,artoolkit/osg,jtorresfabra/osg,scrawl/osg,marchelbling/osg,scrawl/osg,openscenegraph/osg,marchelbling/osg,artoolkit/osg,scrawl/osg,openscenegraph/osg,jtorresfabra/osg,marchelbling/osg,marchelbling/osg