Use less idents

[iunanua]

What does this PR do?

When an ident argument is found use it instead of create a new ident and an assignation

Motivation

Additional Notes

Describe how to test your changes

Checklist

• The CHANGELOG.md has been updated
• Unit tests have been updated and pass
• If known, an appropriate milestone has been selected

[iunanua]

in some occasions we need to extract an ident. See:

// Assignment to captured parameters.
assertEquals(42, function(a,b) {
  arguments[1] = 11;
  return a + function(){ a = b; return a; }() + a;
}(20, 37), "captured assignment");