nested struct

[ufcpp]

[NonCopyable] struct A { }

// ok
class OtherClass
{
    A a;
}

// ok
[NonCopyable] struct OtherNonCopyable
{
    A a;
}

// NG
struct OtherCopyableStruct
{
    A a;
}

[ufcpp]

https://github.com/ufcpp/NonCopyableAnalyzer/commit/10f64313d93fb35c10969cea5e4f9a1166429863