Fix whitespace in standalone build.js
Fix whitespace in standalone build.js

Replace tabs with spaces and match whitespace conventions.

giuseppeg/flight,KyawNaingTun/flight,david84/flight,KyawNaingTun/flight,joelbyler/flight,david84/flight,Shinchy/flight,joelbyler/flight,flightjs/flight,icecreamliker/flight,icecreamliker/flight,Shinchy/flight,robertknight/flight,robertknight/flight,margaritis/flight,flightjs/flight