Don't delete smart pointers.
Don't delete smart pointers.

Thanks Chytu:
http://www.pcl-users.org/Seg-fault-while-using-VTK-Smoother-tp3380114p3381648.html

git-svn-id: e7ea667a1d39a4453c4efcc4ba7bca3d620c3f19@2642 a9d63959-f2ad-4865-b262-bf0e56cfafb6

otherlab/pcl,patmarion/PCL,otherlab/pcl,otherlab/pcl,daviddoria/PCLMirror,daviddoria/PCLMirror,patmarion/PCL,patmarion/PCL,daviddoria/PCLMirror,patmarion/PCL,patmarion/PCL,daviddoria/PCLMirror,otherlab/pcl,otherlab/pcl,daviddoria/PCLMirror