vim: Use explicit global, not default (#2987)

This should have no user-visible impact, but tidies up one of the
awkwardnesses
of how vim uses global state at the moment.

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>
1295e5b41fConrad Irwin committed on 9/20/2023, 2:52:25 AM· committed by GitHubparentse37373a71e519a
2 files changedLine totals unavailable