Fix `IO#select` blocking.
Fix `IO#select` blocking.

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