base85: use absolute_import

mercurial/pure/base85.py

@@ -5,6 +5,8 b''
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
+from __future__ import absolute_import
+
 import struct
 
 _b85chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" \

tests/test-check-py3-compat.t

@@ -122,7 +122,6 b''
   mercurial/manifest.py not using absolute_import
   mercurial/mdiff.py not using absolute_import
   mercurial/patch.py not using absolute_import
-  mercurial/pure/base85.py not using absolute_import
   mercurial/pure/bdiff.py not using absolute_import
   mercurial/pure/diffhelpers.py not using absolute_import
   mercurial/pure/mpatch.py not using absolute_import