Author: Maciej Fijalkowski <fij...@gmail.com>
Branch: 
Changeset: r46461:0490a2d34f8e
Date: 2011-08-12 11:22 +0200
http://bitbucket.org/pypy/pypy/changeset/0490a2d34f8e/

Log:    merge default

diff --git a/pypy/module/posix/app_posix.py b/pypy/module/posix/app_posix.py
--- a/pypy/module/posix/app_posix.py
+++ b/pypy/module/posix/app_posix.py
@@ -315,7 +315,7 @@
             self._proc = proc
         def close(self):
             self._stream.close()
-            return self._proc.wait()
+            return self._proc.wait() or None    # 0 => None
         __del__ = close
         def __getattr__(self, name):
             return getattr(self._stream, name)
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