[prtester.py] Fix: Only select actual "option" elements of "select" elements #3932
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This PR will fix the "TypeError: argument of type 'NoneType' is not iterable" error in
prtester.py
(first noticed in #3930).The script iterates thought each child element and expects them to all be an
option
element. Since #3924, everyoption
now has an additional\n
causing this error.With this PR the script will only iterates thought actual
option
element.