Update utils.js

[aryzing]

Added a comment to clarify why reply messages are not sent when their length is 1. Alternatively we could also create a function with a descriptive name of the check being performed,

function hasMessage(encoder) {
    return encoding.length(encoder) > 1;
}

The if statement would then look something like,

if (hasMessage(encoder)) {
    send(...);
}

Thoughts?

_{Huly®: YJS-751}

[dmonad]

That works, thanks!