Check that 'statusline' option is correct
Check that 'statusline' option is correct

statusline of quickfix window will be reset in the ftplugin of
$VIMRUNTIME, therefore check that airline is still active

fixes #1447

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