pjsip_options.c: Allow immediate qualifies for new contacts.

When multiple endpoints try to register close together using the same
AOR with qualify_frequency set, one contact would qualify immediately
while the other contacts would have to wait out the duration of the
timer before being able to qualify. Changing the conditional to check
the contact container count for a non-zero value allows all contacts to
qualify immediately.

Change-Id: I79478118ee7e0d6e76af7c354d66684220db9415

res/res_pjsip/pjsip_options.c

@@ -2100,8 +2100,10 @@ static int sip_options_contact_add_task(void *obj)
 	ao2_cleanup(contact_status);
 
 	if (task_data->aor_options->qualify_frequency) {
-		/* If this is the first contact we need to schedule up qualification */
-		if (ao2_container_count(task_data->aor_options->contacts) == 1) {
+		/* There will always be a contact here, and we need to immediately schedule
+		 * a qualify so that contacts are not waiting for the qualify_frequency
+		 * timer duration before qualifying.
+		 */
 		ast_debug(3, "Starting scheduled callback on AOR '%s' for qualifying as there is now a contact on it\n",
 			task_data->aor_options->name);
 		/*
@@ -2124,7 +2126,6 @@ static int sip_options_contact_add_task(void *obj)
 			ast_log(LOG_ERROR, "Unable to schedule qualify for contacts of AOR '%s'\n",
 				task_data->aor_options->name);
 		}
-		}
 	} else {
 		/*
 		 * If this was the first contact added to a non-qualified AOR then