Update VS2005DockPaneStrip.cs
Update VS2005DockPaneStrip.cs

A fix for the symptom of https://github.com/dockpanelsuite/dockpanelsuite/issues/209, although probably not the underlying cause (content not being in the Tabs collection)
joelbyren/dockpanelsuite,transistor1/dockpanelsuite,dockpanelsuite/dockpanelsuite,Romout/dockpanelsuite,xo-energy/dockpanelsuite