Marked a few lines as not reachable by the full coverage in the catch_directorycollection.cpp test.
Marked a few lines as not reachable by the full coverage in the catch_directorycollection.cpp test.

martinmoene/zipios,martinmoene/zipios,pgquiles/zipios,pgquiles/zipios,pgquiles/zipios,martinmoene/zipios,pgquiles/zipios,martinmoene/zipios