Fix cgclear to continue unmounting on error
Fix cgclear to continue unmounting on error

Currently when the cgclear stumbles upon a mount point which cannot be
removed it exits immediatelly. IMHO it should continue clearing the rest
and unmount as much as possible.

Signed-off-by: Jan Safranek <a7f4b96ffdd515ecef00f117294da18555749b0b@redhat.com>
Acked-by: Dhaval Giani <f48451d72a1ad74c777093928b661ad7099a85df@gmail.com>

rafalmiel/libcg,rafalmiel/libcg,rafalmiel/libcg,jrfastab/Linux-cgdcbxd,jrfastab/Linux-cgdcbxd,jrfastab/Linux-cgdcbxd,rafalmiel/libcg,jrfastab/Linux-cgdcbxd