tree 8ab2e02547b2dfc6202a75d8d61b27f84e1705d5
parent 5cbaa7ef877f3ab4a1d89f3e463f3a281709ec05
author johnchronis <johnchronis@gmail.com> 1539039687 -0500
committer Yannis Chronis <johnchronis@gmail.com> 1539280375 -0500

Add virtual destructors where they are needed to remove compilations errors.