fix bad cleanup

git-svn-id: https://svn.salilab.org/imp/trunk@16869 e91f8c7b-0e32-4433-a9ac-4502d39a4eab
suppress warnings

git-svn-id: https://svn.salilab.org/imp/trunk@16870 e91f8c7b-0e32-4433-a9ac-4502d39a4eab