[OpenSIPS-Devel] [OpenSIPS/opensips] 40aba8: sql_cacher: fix concurrent use of $sql_cached_value

[Vlad Pătrașcu]

  Branch: refs/heads/3.0
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 40aba8e29673803c7a39a3efc96bb5260d785587
      https://github.com/OpenSIPS/opensips/commit/40aba8e29673803c7a39a3efc96bb5260d785587
  Author: Vlad Patrascu <vladp at opensips.org>
  Date:   2019-10-29 (Tue, 29 Oct 2019)

  Changed paths:
    M modules/sql_cacher/sql_cacher.c
    M modules/sql_cacher/sql_cacher.h

  Log Message:
  -----------
  sql_cacher: fix concurrent use of $sql_cached_value

For example, this fixes issues when calling a script function with multiple
$sql_cached_value params as PV specs. The function would get the same static
buffer that would be progressively extended and overwritten.

(cherry picked from commit cefc071606b52aefffa2967adf8b5846878c3296)