[db] List comprehension on transaction_manager.
[db] List comprehension on transaction_manager.

sharad1126/owtf,DarKnight--/owtf,DePierre/owtf,owtf/owtf,DarKnight24/owtf,sharad1126/owtf,owtf/owtf,DarKnight24/owtf,DarKnight--/owtf,sharad1126/owtf,sharad1126/owtf,DarKnight--/owtf,DarKnight24/owtf,DarKnight--/owtf,owtf/owtf,DarKnight24/owtf,owtf/owtf,owtf/owtf,DePierre/owtf,DePierre/owtf,DePierre/owtf