[PATCH 2 of 4] changelog: remove redundant parenthesis

[Gregory Szorc]

# HG changeset patch
# User Gregory Szorc <gregory.szorc at gmail.com>
# Date 1456640747 28800
#      Sat Feb 27 22:25:47 2016 -0800
# Node ID 2d5c509edd9094ebc26b177db85842a46caf9c38
# Parent  28cf83f79951bba88e324c66e66261e06030dc46
changelog: remove redundant parenthesis

You don't need to surround returned tuples with parens.

diff --git a/mercurial/changelog.py b/mercurial/changelog.py
--- a/mercurial/changelog.py
+++ b/mercurial/changelog.py
@@ -332,17 +332,17 @@ class changelog(revlog.revlog):
                         : older versions ignore it
         files\n\n       : files modified by the cset, no \n or \r allowed
         (.*)            : comment (free text, ideally utf-8)
 
         changelog v0 doesn't use extra
         """
         text = self.revision(node)
         if not text:
-            return (nullid, "", (0, 0), [], "", _defaultextra)
+            return nullid, "", (0, 0), [], "", _defaultextra
         last = text.index("\n\n")
         desc = encoding.tolocal(text[last + 2:])
         l = text[:last].split('\n')
         manifest = bin(l[0])
         user = encoding.tolocal(l[1])
 
         tdata = l[2].split(' ', 2)
         if len(tdata) != 3:
@@ -353,17 +353,17 @@ class changelog(revlog.revlog):
             except ValueError:
                 timezone = 0
             extra = _defaultextra
         else:
             time, timezone = float(tdata[0]), int(tdata[1])
             extra = decodeextra(tdata[2])
 
         files = l[3:]
-        return (manifest, user, (time, timezone), files, desc, extra)
+        return manifest, user, (time, timezone), files, desc, extra
 
     def readfiles(self, node):
         """
         short version of read that only returns the files modified by the cset
         """
         text = self.revision(node)
         if not text:
             return []