[Serusers] Incorrect on-failure logic in 0.8.11

[Maxim Sobolev]

Folks,

We came over the problem with on-failure processing. In a nutshell our 
config looks like the following:

route {
   if (method == "INVITE") {
     rewriteuser("345678");
     rewritehostport("1.1.1.1:5060");
     t_on_failure("1");
     t_relay();
     break;
   };
}

failure_route[1] {
   rewritehostport("2.2.2.2:5060");
   append_branch();
   t_relay();
}

The problem is that if transaction to 1.1.1.1 fails and we are 
initiating another transaction to 2.2.2.2, the username part of requiest 
  URI sent to 2.2.2.2 is original one, not "345678", as it could be 
expected.

Any ideas?

-Maxim