FS-2731 refactor a bit to make this actually usable and more cross-endpoint compatible

a7ab24ef · Raymond Chandler · 0df6c2d0 · a7ab24ef · a7ab24ef
--- a/src/mod/endpoints/mod_sofia/mod_sofia.c
+++ b/src/mod/endpoints/mod_sofia/mod_sofia.c
--- a/src/mod/endpoints/mod_sofia/sofia_presence.c
+++ b/src/mod/endpoints/mod_sofia/sofia_presence.c