omit namespace when calling calcAttributionWidth from within 'Util'

[jgravois]

L.esri.Util.calcAttributionWidth(map)

esri-leaflet/src/Util.js

Line 161 in bf2e7d9

'max-width:' + L.esri.Util.calcAttributionWidth(map) +';'

esri-leaflet/src/Util.js

Line 169 in bf2e7d9

map.attributionControl._container.style.maxWidth = L.esri.Util.calcAttributionWidth(e.target);

[jgravois]

this breaks bundles downstream that want to selectively import a tree-shaken ES6 module

[jgravois]

thanks for volunteering to help with this one @hamhands! if you're still having trouble calling karma from the CLI next time you crack your laptop locally let me know.

[hamhands]

@jgravois yeah karma is still giving me hell. Ima push the changes and let travis handle it for now.