Silence a warning from gcc 4.0.1 by specifying a function's parameter list is

'void' instead of just a set of empty parentheses.

Modules/main.c

@@ -183,7 +183,7 @@ static int RunModule(char *module)
    "threading" threads have completed. */
 #include "abstract.h"
 static void
-WaitForThreadShutdown()
+WaitForThreadShutdown(void)
 {
 #ifdef WITH_THREAD
 	PyObject *result;