[PATCH] match: remove unnecessary setting of self._always

[Martin von Zweigbergk]

# HG changeset patch
# User Martin von Zweigbergk <martinvonz at gmail.com>
# Date 1412117888 25200
#      Tue Sep 30 15:58:08 2014 -0700
# Node ID cc76b49dd2c20727b35d8d869dd6911845794e13
# Parent  889789a2ca9f19755bf0d302c8671f850e42a059
match: remove unnecessary setting of self._always

The 'always' class calls its parent constructor with an empty list of
patterns, which will result in a matcher that always matches. The
parent constructor will set self._always to True in such cases, so
there is no need to set it again.

diff --git a/mercurial/match.py b/mercurial/match.py
--- a/mercurial/match.py
+++ b/mercurial/match.py
@@ -156,7 +156,6 @@
 class always(match):
     def __init__(self, root, cwd):
         match.__init__(self, root, cwd, [])
-        self._always = True
 
 class narrowmatcher(match):
     """Adapt a matcher to work on a subdirectory only.