shelve: don't swallow errors that happen when reverting the working copy Same reasoning as the parent commit. The code in question here comes from fb8065de47b0 (unshelve: silence internal revert, 2014-08-15), which says that it was to prepare for some upcoming revert changes. I suppose those changes have happened by now but we fixed something about it, because I don't see any unwanted changes in tests (no changes at all in tests, in fact). Differential Revision: https://phab.mercurial-scm.org/D10883