tests: fix command name in test-blackbox.t to be bytes
This command is only used when tests are run with --with-chg, so this was missed
before.
Differential Revision: https://phab.mercurial-scm.org/D7553
--- a/tests/test-blackbox.t Thu Dec 05 14:01:26 2019 -0800
+++ b/tests/test-blackbox.t Thu Dec 05 14:18:39 2019 -0800
@@ -390,7 +390,7 @@
> from mercurial import registrar, scmutil
> cmdtable = {}
> command = registrar.command(cmdtable)
- > @command('noop')
+ > @command(b'noop')
> def noop(ui, repo):
> pass
> EOF