utils/ruby.sh: test_ruby(): keep temporary variables local
utils/ruby.sh: test_ruby(): keep temporary variables local

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