Fix two issues introduced by issue #71031 by changing the signature of
PyImport_AppendInittab() to take a const char *.
diff --git a/Include/import.h b/Include/import.h
index 05ad7f0..a6e2857 100644
--- a/Include/import.h
+++ b/Include/import.h
@@ -43,7 +43,7 @@
 PyAPI_DATA(PyTypeObject) PyNullImporter_Type;
 PyAPI_DATA(struct _inittab *) PyImport_Inittab;
 
-PyAPI_FUNC(int) PyImport_AppendInittab(char *name, void (*initfunc)(void));
+PyAPI_FUNC(int) PyImport_AppendInittab(const char *name, void (*initfunc)(void));
 PyAPI_FUNC(int) PyImport_ExtendInittab(struct _inittab *newtab);
 
 struct _frozen {