[OpenSIPS-Devel] [OpenSIPS/opensips] 31fba7: usrloc: Fix possible crash during contact pinging

[Liviu Chircu]

  Branch: refs/heads/2.4
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 31fba7d0f82eecfd0fadb0f99e02e903f5888e65
      https://github.com/OpenSIPS/opensips/commit/31fba7d0f82eecfd0fadb0f99e02e903f5888e65
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2018-05-09 (Wed, 09 May 2018)

  Changed paths:
    M modules/usrloc/dlist.c

  Log Message:
  -----------
  usrloc: Fix possible crash during contact pinging

This patch fixes a bug introduced in commit 02e6a641292, where the
output buffer does not contain a leading "0000" marker despite the
"ul.get_all_contacts()" function returning a 0 ("all contacts have been
dumped, the buffer is properly formatted").

Reported by @thesipguy

Credits to Răzvan Crainea for spotting the bug

Fixes #1352

(cherry picked from commit 2bb11c599095fbef90706bad9e314feba80d107f)



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