wireproto: use listcomp instead of map()

The latter returns a generator object on Python 3, which breaks
various parts of hg that expected a list.

Differential Revision: https://phab.mercurial-scm.org/D1100

mercurial/wireproto.py

@@ -153,7 +153,7 b' future = peer.future'
 
 def decodelist(l, sep=' '):
     if l:
-        return map(bin, l.split(sep))
+        return [bin(v) for v in  l.split(sep)]
     return []
 
 def encodelist(l, sep=' '):