[OpenSIPS-Devel] [OpenSIPS/opensips] a18fae: sipmsgops: fix buffer management issue

[Liviu Chircu]

  Branch: refs/heads/2.1
  Home:   https://github.com/OpenSIPS/opensips
  Commit: a18fae9b9121fe6d7e84f56e891be750d1624139
      https://github.com/OpenSIPS/opensips/commit/a18fae9b9121fe6d7e84f56e891be750d1624139
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2015-04-16 (Thu, 16 Apr 2015)

  Changed paths:
    M modules/sipmsgops/sipmsgops.c

  Log Message:
  -----------
  sipmsgops: fix buffer management issue

is_present_hf() and remove_hf() would sometimes misbehave
when used with pseudo-variables (commit 6e88f653702).

Reported by Eric Werkhoven

Also fix a couple of noisy log messages.

(cherry picked from commit 445d90bc794887f6e0d8ce7716a5480bb50e3b51)