[BUG] inspect expression cannot initialize a variable

[ntrel]

To Reproduce

    i := inspect v -> int {
        is _ = 0;
    };

Error:

inspect.cpp2(6,10): error: (temporary alpha limitation) cppfront is still learning 'inspect' - only inspect expressions are currently supported

[JohelEGP]

This is interesting.
That's a declaration statement for i,
and its initializer is a statement.
But unlike a inspect-expression statement,
this one is expected to be non-void to serve as an initializer.