PathBuf pop()s even if file_name is None

[pongad]

Playground link

The documentation states that pop should do nothing and return false if file_name is None, but it returns true and actually removes the ".." component.

[Stargateur]

it's more a documentation error and should be "if parent() return None"

[Stargateur]

Duplicate of #58474 already fix in #58496

[pongad]

Ah thank you for the pointer!