Cask: simplify chmod +w passes
Cask: simplify chmod +w passes

vitorgalvao/brew,konqui/brew,Homebrew/brew,reitermarkus/brew,sjackman/homebrew,Homebrew/brew,Linuxbrew/brew,konqui/brew,konqui/brew,konqui/brew,MikeMcQuaid/brew,EricFromCanada/brew,nandub/brew,JCount/brew,claui/brew,JCount/brew,EricFromCanada/brew,vitorgalvao/brew,Linuxbrew/brew,MikeMcQuaid/brew,mahori/brew,reitermarkus/brew,JCount/brew,claui/brew,mahori/brew,reitermarkus/brew,vitorgalvao/brew,nandub/brew,mahori/brew,MikeMcQuaid/brew,sjackman/homebrew,JCount/brew,sjackman/homebrew,Homebrew/brew,sjackman/homebrew,mahori/brew,nandub/brew,EricFromCanada/brew,nandub/brew,EricFromCanada/brew,Homebrew/brew,claui/brew,claui/brew,Linuxbrew/brew,vitorgalvao/brew,MikeMcQuaid/brew,reitermarkus/brew,Linuxbrew/brew