cubicweb-vcsfile #465366 deleting from a rev in two branches leads to crash [resolved]

trace:

 File "/home/auc/src/fcw/cubes/vcsfile/hooks.py", line 110, in commit_event
   transaction.commit()
 File "/home/auc/src/fcw/cubes/vcsfile/repohg.py", line 214, in commit
   raise QueryError('nothing changed')
QueryError: nothing changed
prioritynormal
typebug
done in1.0.10
load left0.000
closed by<not specified>