twitter/bootstrap — pull request #6710 by baslr (2013-01-26 01:02:30+00:00)
Title: fix: .icon-folder-close same width as icon-folder-open

.icon-folder-close same width as icon-folder-open. this prevents
buttons from wobbling if the icon changes from closed folder
to open folder

Tests:
unfixed version: http://baslr.github.com/boostrapButtons.html
fixed version: http://baslr.github.com/boostrapButtonsFix.html