duplicate const
duplicate const

git-svn-id: 1af002208e930b4d920e7c2b948d1e98a012c795@2899 a9d63959-f2ad-4865-b262-bf0e56cfafb6

psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn,psoetens/pcl-svn