account for possibility of uninitialized variable
account for possibility of uninitialized variable

otaviof/vim-airline,elisescu/vim-airline,lukw00/vim-airline,astronaut1712/vim-airline,gergap/vim-airline,sarvex/vim-airline,rchicoli/vim-airline,NLKNguyen/vim-airline,kazuoteramoto/vim-airline,dlanileonardo/vim-airline,ghickman/vim-airline,tschundler/dotfiles,apriendeau/vim-airline,tschundler/dotfiles,junix/vim-airline,ForrestAlfred/vim-airline,torteropaid/vim-airline,brownbathrobe/vim-airline,acasajus/vim-airline,sappo/vim-airline,blueyed/vim-airline,kalmuthu/vim-airline,jmartiuk5/vim-airline,Archman/vim-airline,zthero/vim-airline,xxxhycl2010/vim-airline,unphased/vim-airline,chrisbra/vim-airline,ornicar/vim-airline,PatrickCoffey/vim-airline,RsrchBoy/vim-airline,cchamberlain/vim-airline,tschundler/dotfiles,zekzekus/vim-airline,yzhou61/vim-airline,sunyinhui/vim-airline,mildred/vim-airline,tafryn/vim-airline,kimw/vim-airline,vim-IDE/vim-airline,Nesta/vim-airline,yubo/vim-airline,jordwalke/vim-airline,wilywampa/vim-airline,cyrixhero/vim-airline,ozankasikci/vim-airline,maritza05/Vim-Configuration-Files,dalguji/vim-airline,ahaasler/vim-airline,HarmtH/vim-airline,mlins/vim-airline,bling/vim-airline,azide0x37/vim-airline