Fixed Coverity reported issue.
Fixed Coverity reported issue.

CID 11814: Uninitialized scalar field (UNINIT_CTOR)
Non-static class member _updateCamera is not initialized in this constructor nor in any functions that it calls.



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