unpack: don't call realpath on potentially non-existent directory
unpack: don't call realpath on potentially non-existent directory

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