Fix curlrc existence check
Fix curlrc existence check

Enumerable#one? is not available under Ruby 1.8.6. Further, we really
want #any? here, as setting both HOME and CURL_HOME can trigger a false
negative.

Fixes Homebrew/homebrew#15883.

reelsense/brew,mahori/brew,pseudocody/brew,jmsundar/brew,Linuxbrew/brew,hanxue/linuxbrew,hanxue/linuxbrew,nandub/brew,zmwangx/brew,jmsundar/brew,claui/brew,nandub/brew,amar-laksh/brew_sudo,staticfloat/brew,Homebrew/brew,alyssais/brew,bfontaine/brew,toonetown/homebrew,AnastasiaSulyagina/brew,gordonmcshane/homebrew,sjackman/homebrew,staticfloat/brew,AnastasiaSulyagina/brew,zmwangx/brew,vitorgalvao/brew,nandub/brew,konqui/brew,DomT4/brew,mgrimes/brew,ilovezfs/brew,MikeMcQuaid/brew,reitermarkus/brew,tonyg/homebrew,reelsense/brew,tonyg/homebrew,Homebrew/brew,hanxue/linuxbrew,nandub/brew,EricFromCanada/brew,alyssais/brew,EricFromCanada/brew,tonyg/homebrew,muellermartin/dist,sjackman/homebrew,claui/brew,JCount/brew,DomT4/brew,toonetown/homebrew,rwhogg/brew,vitorgalvao/brew,zmwangx/brew,maxim-belkin/brew,ilovezfs/brew,MikeMcQuaid/brew,aw1621107/brew,palxex/brew,sjackman/homebrew,mahori/brew,mistydemeo/homebrew,staticfloat/brew,maxim-belkin/brew,claui/brew,mahori/brew,bfontaine/brew,vitorgalvao/brew,alyssais/brew,mahori/brew,palxex/brew,EricFromCanada/brew,gregory-nisbet/brew,JCount/brew,vitorgalvao/brew,aw1621107/brew,reitermarkus/brew,EricFromCanada/brew,JCount/brew,pseudocody/brew,mgrimes/brew,Linuxbrew/brew,konqui/brew,Linuxbrew/brew,MikeMcQuaid/brew,amar-laksh/brew_sudo,rwhogg/brew,reelsense/brew,aw1621107/brew,Linuxbrew/brew,JCount/brew,muellermartin/dist,Homebrew/brew,MikeMcQuaid/brew,palxex/brew,muellermartin/dist,gregory-nisbet/brew,Homebrew/brew,pseudocody/brew,toonetown/homebrew,amar-laksh/brew_sudo,gregory-nisbet/brew,mistydemeo/homebrew,gordonmcshane/homebrew,konqui/brew,mistydemeo/homebrew,DomT4/brew,reitermarkus/brew,reitermarkus/brew,AnastasiaSulyagina/brew,sjackman/homebrew,gordonmcshane/homebrew,rwhogg/brew,maxim-belkin/brew,mgrimes/brew,DomT4/brew,konqui/brew,claui/brew,jmsundar/brew,bfontaine/brew,ilovezfs/brew