Delete finalize after first error

[jcubic]

Expected behavior

If there is error in echo finalize I should see only one error in console

Actual behavior

it prints errors in each resize

Steps to reproduce

term.echo('xxx', {
  finalize: function() {
      x();
  }
});

[jcubic]

The problem was more complex the finalize was already removed, the issue was that display exception was triggering flush before buffer was cleared. The solution was to remove item from buffer before calling finalize. while + buff.shift() instead of $.each.