Fix not provided --output-file argument translated into string instead of null (#4480)
Fix not provided --output-file argument translated into string instead of null (#4480)

* Fix not provided --output-file argument translated into string instead of null
Fixes #4456

* [rector] Fix not provided --output-file argument translated into string instead of null Fixes #4456

* [cs] Fix not provided --output-file argument translated into string instead of null Fixes #4456

Co-authored-by: rector-bot <2bc6038c3dfca09b2da23c8b6da8ba884dc2dcc2@getrector.org>
RectorPHP/Rector