Make some private functions static (thanks `make smelly`)

Modules/_functoolsmodule.c

@@ -203,7 +203,7 @@ static PyGetSetDef partial_getsetlist[] = {
    it as a hook to do stange things.
  */
 
-PyObject *
+static PyObject *
 partial_reduce(partialobject *pto, PyObject *unused)
 {
 	return Py_BuildValue("O(O)(OOOO)", Py_TYPE(pto), pto->fn, pto->fn, 
@@ -211,7 +211,7 @@ partial_reduce(partialobject *pto, PyObject *unused)
 			     pto->dict ? pto->dict : Py_None);
 }
 
-PyObject *
+static PyObject *
 partial_setstate(partialobject *pto, PyObject *args)
 {
 	PyObject *fn, *fnargs, *kw, *dict;

Modules/posixmodule.c

@@ -3117,6 +3117,7 @@ free_string_array(char **array, Py_ssize_t count)
 	PyMem_DEL(array);
 }
 
+static
 int fsconvert_strdup(PyObject *o, char**out)
 {
 	PyObject *bytes;