Merged revisions 65174 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r65174 | amaury.forgeotdarc | 2008-07-21 23:06:46 +0200 (lun., 21 juil. 2008) | 3 lines

  On Windows, silence a Purify warning and initialize the memory passed to CryptGenRandom.
  Since python doesn't provide any particular random data, it seems more reasonable anyway.
........

Modules/posixmodule.c

@@ -6690,6 +6690,7 @@ win32_urandom(PyObject *self, PyObject *args)
 	result = PyBytes_FromStringAndSize(NULL, howMany);
 	if (result != NULL) {
 		/* Get random data */
+		memset(PyBytes_AS_STRING(result), 0, howMany); /* zero seed */
 		if (! pCryptGenRandom(hCryptProv, howMany, (unsigned char*)
 				      PyBytes_AS_STRING(result))) {
 			Py_DECREF(result);