[WPF] No longer compiles with MD on Windows

[zaubererty]

This issue only comes up when you build the project with MD.

Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.TypeInitializationException: The type initializer for 'Xwt.WPFBackend.TreeViewBackend' threw an exception. ---> System.IO.IOException: Cannot locate resource 'xwt.wpfbackend/treeview.xaml'.

at MS.Internal.AppModel.ResourcePart.GetStreamCore(FileMode mode, FileAccess access)

at System.IO.Packaging.PackagePart.GetStream(FileMode mode, FileAccess access)

at System.IO.Packaging.PackagePart.GetStream()

at System.Windows.Application.GetResourceStream(Uri uriResource)

at Xwt.WPFBackend.TreeViewBackend..cctor() in c:\Users\tzi\Documents\Projects\xwt\Xwt.WPF\Xwt.WPFBackend\TreeViewBackend.cs:line 49

[slluis]

Should be fixed.