Calls a function (getExpectedFnc()) repeatedly until it gives an expected result (confirmIsAvailableFnc()). Forwards it to (doPatchFnc()).
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/428034/941202/Patch%20When%20Available%20Library.js
