Actually exit with a number! [skip ci]
Actually exit with a number! [skip ci]

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist,sternb0t/apt-package-whitelist,jschlyter/apt-package-whitelist,AlCutter/apt-package-whitelist,AlCutter/apt-package-whitelist,Tyrael/apt-package-whitelist,sternb0t/apt-package-whitelist,jschlyter/apt-package-whitelist,christophgysin/apt-package-whitelist,jmerkow/apt-package-whitelist,Tyrael/apt-package-whitelist,rnestler/apt-package-whitelist,phw/apt-package-whitelist,christophgysin/apt-package-whitelist,phw/apt-package-whitelist,jmerkow/apt-package-whitelist,rnestler/apt-package-whitelist