Fixed the memory leaks introduced in SVN r1589. Instead of using
pointers (to arrays) we now use std::vector to store the mask. No need for deallocation of memory anymore: std::vector cleans up after itself.



git-svn-id: svn://svn.r-forge.r-project.org/svnroot/genabel@1699 edb9625f-4e0d-4859-8d74-9fd3b1da38cb