[C# != C++] Lookup in funcRef

[marcgurevitx]

Lookup in funcRef behaves differently in Mini Micro and command-line.

In Mini Micro:

]funcRef.foo = function; print "hi"; end function
](@print).foo
hi
]

In command-line:

> funcRef.foo = function; print "hi"; end function
> (@print).foo
Runtime Error: foo [line 1]
>