[dovecot/core] 9766af: lib: Improved istream-timeout error message.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: 9766afd8dc3976d238e1c71712d6bafa316f2e06
      https://github.com/dovecot/core/commit/9766afd8dc3976d238e1c71712d6bafa316f2e06
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-04-22 (Fri, 22 Apr 2016)

  Changed paths:
    M src/lib/istream-timeout.c

  Log Message:
  -----------
  lib: Improved istream-timeout error message.

We're supposed to check that timeout isn't triggered after a long-running
code, but it's not perfect. So provide the actual timing information we
saw instead of the expected timeout.