Don't crash in wxOSXGetImageFromBundle() if the bundle is invalid
Just return a null image instead, as this function can be called when we don't have any bitmaps too -- as it happens in the Button::Bitmap unit test, for example.
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@@ -171,6 +171,9 @@ wxBitmapBundle wxBitmapBundle::FromResources(const wxString& name)
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WXImage wxOSXGetImageFromBundle(const wxBitmapBundle& bundle)
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{
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if (!bundle.IsOk())
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return NULL;
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WXImage image = bundle.GetImpl()->OSXGetImage();
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if (image == 0)
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