[mod_callcenter] Fix globals.nodes gets unset

`globals` was getting initialized to null after `switch_event_bind_removable` binding causing `globals.nodes` to get set to NULL causing `switch_event_unbind` not to be able to unbind the SWITCH_EVENT_PRESENCE_PROBE event when unloading the module. Besides not being able to unbind the event, this was also causing a segfault  upon receiving a PRESENCE_PROBE event when unloading or reloading the module

diff --git a/src/mod/applications/mod_callcenter/mod_callcenter.c b/src/mod/applications/mod_callcenter/mod_callcenter.c
index cba6dc84f4d83eb649974e169a41760fca4e2728..6eee6dd514020cdbac79022deb38d653a525cf76 100644 (file)
--- a/src/mod/applications/mod_callcenter/mod_callcenter.c
+++ b/src/mod/applications/mod_callcenter/mod_callcenter.c
@@ -4213,6 +4213,10 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_callcenter_load)
                switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Couldn't register subclass %s!\n", CALLCENTER_EVENT);
                return SWITCH_STATUS_TERM;
        }
+       
+       
+       memset(&globals, 0, sizeof(globals));
+       globals.pool = pool;
 
        /* Subscribe to presence request events */
        if (switch_event_bind_removable(modname, SWITCH_EVENT_PRESENCE_PROBE, SWITCH_EVENT_SUBCLASS_ANY,
@@ -4221,9 +4225,6 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_callcenter_load)
                return SWITCH_STATUS_GENERR;
        }
 
-       memset(&globals, 0, sizeof(globals));
-       globals.pool = pool;
-
        switch_core_hash_init(&globals.queue_hash);
        switch_mutex_init(&globals.mutex, SWITCH_MUTEX_NESTED, globals.pool);