[OpenSIPS-Devel] [OpenSIPS/opensips] cf3def: Fix changing proto via force_send_socket().

[Bogdan-Andrei Iancu]

  Branch: refs/heads/1.11
  Home:   https://github.com/OpenSIPS/opensips
  Commit: cf3defd5ea9e07c3b9f7a6ec21707828d08f6600
      https://github.com/OpenSIPS/opensips/commit/cf3defd5ea9e07c3b9f7a6ec21707828d08f6600
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2015-04-02 (Thu, 02 Apr 2015)

  Changed paths:
    M modules/tm/t_funcs.c
    M modules/tm/t_fwd.c
    M modules/tm/uac.c

  Log Message:
  -----------
  Fix changing proto via force_send_socket().

If the RURI does not request any protocol, use the proto of the forced socket (if any).
Related to #420

(cherry picked from commit ac8c2e6845ecea7d01d267b61720d332ee571e1d)