py3: fix kwargs handling in qgurad in hgext/mq.py

# skip-blame because just r'' prefixes

Differential Revision: https://phab.mercurial-scm.org/D3581

hgext/mq.py

@@ -2872,7 +2872,7 b' def guard(ui, repo, *args, **opts):'
     patch = None
     args = list(args)
     if opts.get(r'list'):
-        if args or opts.get('none'):
+        if args or opts.get(r'none'):
             raise error.Abort(_('cannot mix -l/--list with options or '
                                'arguments'))
         for i in xrange(len(q.series)):
@@ -2886,7 +2886,7 b' def guard(ui, repo, *args, **opts):'
         patch = args.pop(0)
     if patch is None:
         raise error.Abort(_('no patch to work with'))
-    if args or opts.get('none'):
+    if args or opts.get(r'none'):
         idx = q.findseries(patch)
         if idx is None:
             raise error.Abort(_('no patch named %s') % patch)