Rename variable for clarity
Rename variable for clarity

It doesn't represent warnings.showwarning's current state so,
the name shouldn't suggest that.

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