If you now keep calling $node->getParent() you will at some point get
the RootFolder back. This is a nice termination check and will prevent
endless loops if an exit condition is slightly off.
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>
Whenever a rename or copy operation failed on the view, we must throw
an exception instead of just ignoring.
Signed-off-by: Vincent Petry <pvince81@owncloud.com>
