Reports comparisons to null which are followed by an 'equals()' call with a constant argument.

For example the following will be reported by this inspection:

    if (s != null && s.equals("literal")) {}
And the quickfix will replace that with:
    if ("literal".equals(s)) {}

When checkbox is checked, 'equals()' with non-constant argument may also be reported if 'equals()' argument is proven to be not-null.