sshpeer: fix path when handling invalid url exception

In 73ed1d13c0bf the code was refactored but the error handling seems to have
been missed (or maybe the object shoud have implemented __bytes__)

mercurial/sshpeer.py

@@ -640,7 +640,7 b' def make_peer('
     """
     u = urlutil.url(path.loc, parsequery=False, parsefragment=False)
     if u.scheme != b'ssh' or not u.host or u.path is None:
-        raise error.RepoError(_(b"couldn't parse location %s") % path)
+        raise error.RepoError(_(b"couldn't parse location %s") % path.loc)
 
     urlutil.checksafessh(path.loc)