cdr: Allow setting of user field from 'h' extension

The CDR code previously did not allow the user field to be set
from the 'h' extension in the dialplan. This change removes that
limitation and allows it to be set.

ASTERISK-26818

Change-Id: I0fed8a79b5e408bac4e30542b8f33a61c5ed9aa6

main/cdr.c

@@ -3251,7 +3251,7 @@ static int cdr_object_update_party_b_userfield_cb(void *obj, void *arg, int flag
 	struct party_b_userfield_update *info = arg;
 	struct cdr_object *it_cdr;
 	for (it_cdr = cdr; it_cdr; it_cdr = it_cdr->next) {
-		if (it_cdr->fn_table == &finalized_state_fn_table) {
+		if (it_cdr->fn_table == &finalized_state_fn_table && it_cdr->next != NULL) {
 			continue;
 		}
 		if (it_cdr->party_b.snapshot
@@ -3275,7 +3275,7 @@ void ast_cdr_setuserfield(const char *channel_name, const char *userfield)
 	if (cdr) {
 		ao2_lock(cdr);
 		for (it_cdr = cdr; it_cdr; it_cdr = it_cdr->next) {
-			if (it_cdr->fn_table == &finalized_state_fn_table) {
+			if (it_cdr->fn_table == &finalized_state_fn_table && it_cdr->next != NULL) {
 				continue;
 			}
 			strcpy(it_cdr->party_a.userfield, userfield);