Split try block in wheel_metadata
Split try block in wheel_metadata

Makes it simpler to substitute in zip-derived WHEEL extraction.

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