dirstate: don't write repo.currenttransaction to repo.dirstate if repo...
dirstate: don't write repo.currenttransaction to repo.dirstate if repo
is None (issue4983)
Some hooks, such as post-init and post-clone, do not get a repo parameter in
their environment. If there is no repo, there is no repo.currenttransaction();
attempting to retrieve it anyway was causing crashes. Now currenttransaction is
only retrieved and written if the repo is not None.
