Changed (again) how the GIL is aquired and the tstate restored. This

time it's simpler, better, and handles the case where there is a wx
calback/event while the GIL has been released by a non-wxPython
extension module.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@26324 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/include/wx/wxPython/pytree.h

@@ -25,9 +25,9 @@ public:
     }
 
     ~wxPyTreeItemData() {
-        wxPyBeginBlockThreads();
+        bool blocked = wxPyBeginBlockThreads();
         Py_DECREF(m_obj);
-        wxPyEndBlockThreads();
+        wxPyEndBlockThreads(blocked);
     }
 
     PyObject* GetData() {
@@ -36,9 +36,9 @@ public:
     }
 
     void SetData(PyObject* obj) {
-        wxPyBeginBlockThreads();
+        bool blocked = wxPyBeginBlockThreads();
         Py_DECREF(m_obj);
-        wxPyEndBlockThreads();
+        wxPyEndBlockThreads(blocked);
         m_obj = obj;
         Py_INCREF(obj);
     }