# HG changeset patch
# User FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
# Date 2015-05-19 16:06:09
# Node ID fd0f919170d20f8328398de2cca3d8bef160534a
# Parent  00d426a3813760ca1c65c0c0446b1221bba45a32

dirstate: use open/read of vfs(opener) explicitly instead of read

This simplifies changes in subsequent patch, which tries to open
`.pending` file when HG_PENDING environment variable is defined.

diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -326,7 +326,11 @@ class dirstate(object):
         self._map = {}
         self._copymap = {}
         try:
-            st = self._opener.read(self._filename)
+            fp = self._opener.open(self._filename)
+            try:
+                st = fp.read()
+            finally:
+                fp.close()
         except IOError, err:
             if err.errno != errno.ENOENT:
                 raise