Resolve a GCC warning.
Resolve a GCC warning.

enlighter/vanitygen,kangaderoo/vanitygen,clovermebitcoin/test,fantomgs/vanitygen,isghe/vanitygen,kangaderoo/vanitygen,bespike/vanitygen,shinohai/vanitygen,Gamecredits-Universe/vanitygen-gamecredits,sobakasu/vanitygen,samr7/vanitygen,Instigo/vanitygen,colindean/vanitygen,dooglus/vanitygen,Cremator/vanitygen,bither/vanitygen,clovermebitcoin/test,sobakasu/vanitygen,WyseNynja/vanitygen,kangaderoo/vanitygen,WyseNynja/vanitygen,dooglus/vanitygen,inuitwallet/vanitygen,Cremator/vanitygen,luke-jr/vanitygen,enlighter/vanitygen,Stoner19/NEOS-vanitygen,sobakasu/vanitygen