tap: fix unexpected wrong variable name
tap: fix unexpected wrong variable name

Homebrew/brew,JCount/brew,nandub/brew,nandub/brew,EricFromCanada/brew,JCount/brew,Homebrew/brew,EricFromCanada/brew,MikeMcQuaid/brew,nandub/brew,JCount/brew,Homebrew/brew,Homebrew/brew,MikeMcQuaid/brew,EricFromCanada/brew,nandub/brew,EricFromCanada/brew,MikeMcQuaid/brew,JCount/brew,MikeMcQuaid/brew