Declare inittimezone static.
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index bd1ad06..1adef6d 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -620,7 +620,7 @@
 #endif /* HAVE_MKTIME */
 
 #ifdef HAVE_WORKING_TZSET
-void inittimezone(PyObject *module);
+static void inittimezone(PyObject *module);
 
 static PyObject *
 time_tzset(PyObject *self, PyObject *unused)
@@ -656,7 +656,8 @@
 should not be relied on.");
 #endif /* HAVE_WORKING_TZSET */
 
-void inittimezone(PyObject *m) {
+static void
+inittimezone(PyObject *m) {
     /* This code moved from inittime wholesale to allow calling it from
 	time_tzset. In the future, some parts of it can be moved back
 	(for platforms that don't HAVE_WORKING_TZSET, when we know what they