Trailing comments lost with return and debugger statements

[nzakas]

I noticed that ReturnStatement nodes doesn’t have leadingComments and trailingComments attached in some cases.

The following code example fails and doen’t have leadingComments or trailingComments:

function a() {
    /* before */
    return;
    /* after */
}

The following code examples work:

Without ReturnStatement:

function a() {
    /* before */
    b();
    /* after */
}

Only one leading comment:

function a() {
    /* before */
    return;
}

Only one trailing comment:

function a() {
    return;
    /* after */
}

Same problem with the debugger statement.

Esprima bug: https://code.google.com/p/esprima/issues/detail?id=609