Fixed Coverity reported issue.
Fixed Coverity reported issue.

CID 11825: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member _primitiveIndex is not initialized in this constructor nor in any functions that it calls.
Non-static class member _ratio is not initialized in this constructor nor in any functions that it calls.

CID 11824: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member _hit is not initialized in this constructor nor in any functions that it calls.
Non-static class member _index is not initialized in this constructor nor in any functions that it calls.
Non-static class member _length is not initialized in this constructor nor in any functions that it calls.
Non-static class member _ratio is not initialized in this constructor nor in any functions that it calls.



ntoand/osg,XiaoCC/osg,XiaoCC/osg,ntoand/osg,koshman86/osg,koshman86/osg,stmh/osg,omega-hub/osg,artoolkit/osg,ntoand/osg,koshman86/osg,stmh/osg,ghub/osg,stmh/osg,omega-hub/osg,stmh/osg,artoolkit/osg,koshman86/osg,XiaoCC/osg,artoolkit/osg,omega-hub/osg,ghub/osg,stmh/osg,ghub/osg,artoolkit/osg,omega-hub/osg,XiaoCC/osg,ntoand/osg,XiaoCC/osg,ghub/osg