dialplan/drouting: Fix time recurrence check interpretation

The tmrec_expr_check() function actually returns 1/-1 on success/failure
and not 1/0, as expected by the calling modules.

Many thanks to Flavio Goncalves for the report!
Fixes #2616

(cherry picked from commit 3056a37)

modules/dialplan/dp_repl.c

@@ -304,7 +304,7 @@ int translate(struct sip_msg *msg, str input, str * output, dpl_id_p idp, str *
 		if(rulep->parsed_timerec) {
 			LM_DBG("Timerec exists for rule checking: %.*s\n", rulep->timerec.len, rulep->timerec.s);
 			// Doesn't matches time period continue with next rule
-			if(!tmrec_expr_check(rulep->parsed_timerec)) {
+			if(tmrec_expr_check(rulep->parsed_timerec) < 0) {
 				LM_DBG("Time rule doesn't match: skip next!\n");
 				continue;
 			}
@@ -328,7 +328,7 @@ int translate(struct sip_msg *msg, str input, str * output, dpl_id_p idp, str *
 		if(rrulep->parsed_timerec) {
 			LM_DBG("Timerec exists for rule checking: %.*s\n", rrulep->timerec.len, rrulep->timerec.s);
 			// Doesn't matches time period continue with next rule
-			if(!tmrec_expr_check(rrulep->parsed_timerec)) {
+			if(tmrec_expr_check(rrulep->parsed_timerec) < 0) {
 				LM_DBG("Time rule doesn't match: skip next!\n");
 				continue;
 			}

modules/drouting/prefix_tree.c

@@ -104,7 +104,7 @@ internal_check_rt(
 		j = 0;
 		while(rtlw!=NULL) {
 			if ( j++ >= *rgidx) {
-				if (!rtlw->rtl->time_rec || tmrec_expr_check(rtlw->rtl->time_rec))
+				if (!rtlw->rtl->time_rec || tmrec_expr_check(rtlw->rtl->time_rec) == 1)
 					goto ok_exit;
 			}
 			rtlw=rtlw->next;