python3: replace sorted(<dict>.iterkeys()) with sorted(<dict>)

contrib/synthrepo.py

@@ -479,7 +479,7 b' def synthesize(ui, repo, descpath, **opt'
         date = min(0x7fffffff, max(0, date))
         user = random.choice(words) + '@' + random.choice(words)
         mc = context.memctx(repo, pl, makeline(minimum=2),
-                            sorted(changes.iterkeys()),
+                            sorted(changes),
                             filectxfn, user, '%d %d' % (date, pick(tzoffset)))
         newnode = mc.commit()
         heads.add(repo.changelog.rev(newnode))

mercurial/filelog.py

@@ -31,7 +31,7 b' def parsemeta(text):'
     return meta, (s + 2)
 
 def packmeta(meta, text):
-    keys = sorted(meta.iterkeys())
+    keys = sorted(meta)
     metatext = "".join("%s: %s\n" % (k, meta[k]) for k in keys)
     return "\1\n%s\1\n%s" % (metatext, text)
 

tests/test-hgweb-auth.py

@@ -25,7 +25,7 b' def writeauth(items):'
 
 def dumpdict(dict):
     return '{' + ', '.join(['%s: %s' % (k, dict[k])
-                            for k in sorted(dict.iterkeys())]) + '}'
+                            for k in sorted(dict)]) + '}'
 
 def test(auth, urls=None):
     print('CFG:', dumpdict(auth))