sys_pyfile_write() does nothing if file is NULL mywrite() falls back to the C file object if sys_pyfile_write() returns an error. This patch fixes a segfault is Py_FatalError() is called in an early stage of Python initialization.

#include "Python.h"

#ifndef PLATFORM
#define PLATFORM "unknown"
#endif

const char *
Py_GetPlatform(void)
{
	return PLATFORM;
}