Merged revisions 81156 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r81156 | victor.stinner | 2010-05-14 02:59:09 +0200 (ven., 14 mai 2010) | 5 lines

  Issue #4653: fix typo in flush_std_files()

  Don't call sys.stderr.flush() if sys has no stderr attribute or if
  sys.stderr==None.
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Python/pythonrun.c

@@ -334,7 +334,7 @@ flush_std_files(void)
             Py_DECREF(tmp);
     }
 
-    if (ferr != NULL || ferr != Py_None) {
+    if (ferr != NULL && ferr != Py_None) {
         tmp = PyObject_CallMethod(ferr, "flush", "");
         if (tmp == NULL)
             PyErr_Clear();