rename to warn_on_401, remove extra return
rename to warn_on_401, remove extra return

xavfernandez/pip,pypa/pip,rouge8/pip,xavfernandez/pip,pradyunsg/pip,pfmoore/pip,sbidoul/pip,rouge8/pip,pradyunsg/pip,pypa/pip,sbidoul/pip,rouge8/pip,xavfernandez/pip,pfmoore/pip