Fixed type error that caused issues on GHC 7.4
Fixed type error that caused issues on GHC 7.4

Gabriel439/lens,danidiaz/lens,hvr/lens,Fuuzetsu/lens,ddssff/lens,timjb/lens,rpglover64/lens,hvr/lens,cdepillabout/lens,omefire/lens,Icelandjack/lens,cchalmers/lens