Modified form of Patch #1611222, adds wxSearchCtrl (generic & native carbon HISearchField)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43908 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/src/gtk/grid_wrap.cpp

@@ -3320,6 +3320,7 @@ public:
                     rval = *ptr;
                 }
                 else if (PySequence_Check(ro) && PyObject_Length(ro) == 2) {
+                    PyErr_Clear();  // Clear the exception left over from wxPyConvertSwigPtr
                     PyObject* o1 = PySequence_GetItem(ro, 0);
                     PyObject* o2 = PySequence_GetItem(ro, 1);
                     if (PyNumber_Check(o1) && PyNumber_Check(o2))