evolve: indent cmdnext and cmdprev ready for locking change (issue5244)
The locking change I'm about to introduce forces an indentation shift. Do
the indentation change with no code change now, to make the next change
easier to review
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Copyright 2011 Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
Logilab SA <contact@logilab.fr>
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
Patrick Mezard <patrick@mezard.eu>
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