wireprotov2peer: properly format errors
formatrichmessage() expects an iterable containing dicts with
well-defined keys. We were passing in something else. This caused
an exception.
Change the code to call formatrichmessage() with the proper argument.
And add a TODO to potentially emit the proper data structure from
the server in the first place.
Differential Revision: https://phab.mercurial-scm.org/D4441
$ hg init
$ echo This is file a1 > a
$ hg add a
$ hg commit -m "commit #0"
$ ls
a
$ echo This is file b1 > b
$ hg add b
$ hg commit -m "commit #1"
$ hg co 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
B should disappear
$ ls
a