don't duplicate base class m_acceleratorTable as m_accelTable in wxMenuBar, this is not only unnecessary but also doesn't allow using GetAcceleratorTable() to retrieve the menu bar accelerators (#9654)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56070 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/menu.cpp

@@ -1347,7 +1347,7 @@ void wxMenuBar::RebuildAccelTable()
             nAccelCount += (*it)->CopyAccels(&accelEntries[nAccelCount]);
         }
 
-        m_accelTable = wxAcceleratorTable(nAccelCount, accelEntries);
+        SetAcceleratorTable(wxAcceleratorTable(nAccelCount, accelEntries));
 
         delete [] accelEntries;
     }