i18n-pt_BR: synchronized with c312ef382033

transaction: only generate file when we actually close the transaction Before this change, the file were written for every call to `tr.close()` exposing data to reader far too early.

transaction: extract file generation into its own function We extract the code generating files into its own function. We are about to move this code around to fix a bug. We'll need it in a function soon to reuse it for "pending" logic. So we move the code into a function instead of moving it twice.