[meld/Python3] vc.git: Fix commit message decoding for py3k

[Kai Willadsen <kaiw src gnome org>]

commit d9e3e574f4e995bbc37474aa4917ae0e5669c741
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Jul 24 11:37:05 2016 +1000

    vc.git: Fix commit message decoding for py3k

 meld/vc/git.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/meld/vc/git.py b/meld/vc/git.py
index 1135fb2..7f86457 100644
--- a/meld/vc/git.py
+++ b/meld/vc/git.py
@@ -139,8 +139,8 @@ class Vc(_vc.Vc):
         if os.path.exists(commit_path):
             # If I have to deal with non-ascii, non-UTF8 pregenerated commit
             # messages, I'm taking up pig farming.
-            with open(commit_path) as f:
-                message = f.read().decode('utf8')
+            with open(commit_path, encoding='utf-8') as f:
+                message = f.read()
             return "\n".join(
                 (l for l in message.splitlines() if not l.startswith("#")))
         return None