TT#14008 Fix graphite deadlock

closes #1346
closes #1345

Change-Id: I47e65ca2c9bd0ba23ef740edfa46b65f3aeda62c
(cherry picked from commit db53dd683a)

daemon/call.c

@@ -2998,7 +2998,7 @@ static struct timeval add_ongoing_calls_dur_in_interval(struct timeval *interval
 	ITERATE_CALL_LIST_START(CALL_ITERATOR_GRAPHITE, call);
 
 		if (!call->monologues.head || IS_FOREIGN_CALL(call))
-			continue;
+			goto next;
 		ml = call->monologues.head->data;
 		if (timercmp(interval_start, &ml->started, >)) {
 			timeval_add(&res, &res, interval_duration);
@@ -3006,7 +3006,8 @@ static struct timeval add_ongoing_calls_dur_in_interval(struct timeval *interval
 			timeval_subtract(&call_duration, &rtpe_now, &ml->started);
 			timeval_add(&res, &res, &call_duration);
 		}
-
+next:
+		;
 	ITERATE_CALL_LIST_NEXT_END(call);
 
 	return res;