tabline: do not add extra space before buffer name
tabline: do not add extra space before buffer name

there was a space too much added in the tabline. Fix that

unphased/vim-airline,tschundler/dotfiles,tschundler/dotfiles,tschundler/dotfiles,chrisbra/vim-airline,rchicoli/vim-airline,yzhou61/vim-airline,bling/vim-airline