tests/test-archive-symlinks.out

hg.clone: fix branch value when passing a repo object (issue2267)

Since 3d6915f5a2bb the branch argument for addbranchrevs should be a tuple:
  (hashbranch, branches)
The right empty value therefore is (None, []) instead of None.

% files
dangling -> nothing
% tar
dangling -> nothing
% zip
dangling -> nothing