Fix Python warning about not untracked objects

Python representations of LPC type objects inherit from the Python base
type object which does support GC. Therefore upon destruction we need
to untrack them.

src/pkg-python.c

@@ -1829,6 +1829,8 @@ ldmud_lpctype_type_dealloc (ldmud_gc_lpctype_type_t* self)
 
     remove_gc_lpctype_object(self);
 
+    if (Py_TYPE(self)->tp_flags & Py_TPFLAGS_HAVE_GC)
+        PyObject_GC_UnTrack(self);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_base);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_dict);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_bases);
@@ -2128,6 +2130,8 @@ ldmud_concrete_array_type_dealloc (ldmud_concrete_array_type_t* self)
  */
 
 {
+    if (Py_TYPE(self)->tp_flags & Py_TPFLAGS_HAVE_GC)
+        PyObject_GC_UnTrack(self);
     Py_XDECREF(self->element_type);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_base);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_dict);
@@ -2400,6 +2404,8 @@ ldmud_concrete_struct_type_dealloc (ldmud_concrete_struct_type_t* self)
     free_struct_name(self->name);
     REMOVE_GC_OBJECT(gc_struct_type_list, self);
 
+    if (Py_TYPE(self)->tp_flags & Py_TPFLAGS_HAVE_GC)
+        PyObject_GC_UnTrack(self);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_base);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_dict);
     Py_XDECREF(self->ldmud_lpctype.type_base.tp_bases);