[OpenSIPS-Devel] [OpenSIPS/opensips] d65b57: transformations: Fix edge-cases with {param.value}...

[Liviu Chircu]

  Branch: refs/heads/3.2
  Home:   https://github.com/OpenSIPS/opensips
  Commit: d65b57494d7fa1cee809639f80378738c5d95461
      https://github.com/OpenSIPS/opensips/commit/d65b57494d7fa1cee809639f80378738c5d95461
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2024-01-09 (Tue, 09 Jan 2024)

  Changed paths:
    M str.h
    M transformations.c

  Log Message:
  -----------
  transformations: Fix edge-cases with {param.value} and {uri.param}

For inputs containing only the parameter part, these transformations
would return a bogus {NULL, 0} value (flagged as PV_VAL_STR), which
cannot be used in assignments or conditional checks.

Credits to Bogdan-Andrei Iancu for finding this issue!

(cherry picked from commit b7c4f2a3bb3307b3c505f7017934a52bef8762fd)