gh-111178: fix incorrect function signatures for Windows builds (#133072)

Author: picnixz

PC/_testconsole.c

@@ -161,7 +161,7 @@ static PyModuleDef testconsole_def = {
 };
 
 PyMODINIT_FUNC
-PyInit__testconsole(PyObject *spec)
+PyInit__testconsole(void)
 {
     return PyModuleDef_Init(&testconsole_def);
 }

PC/winreg.c

@@ -157,7 +157,7 @@ PyHKEY_deallocFunc(PyObject *ob)
 }
 
 static int
-PyHKEY_traverseFunc(PyHKEYObject *self, visitproc visit, void *arg)
+PyHKEY_traverseFunc(PyObject *self, visitproc visit, void *arg)
 {
     Py_VISIT(Py_TYPE(self));
     return 0;