dialog: proper safety test if cseq value in via is larger than hdr

modules/dialog/dlg_cseq.c

@@ -291,9 +291,9 @@ int dlg_cseq_msg_received(void *data)
 	}
 	LM_DBG("via cseq cookie [%.*s] val [%.*s]\n", vcseq.len, vcseq.s,
 			vcseq.len-3, vcseq.s+3);
-	if(vcseq.len-3<get_cseq(&msg)->number.len) {
+	if(vcseq.len-3>get_cseq(&msg)->number.len) {
 		/* higher lenght to update - wrong */
-		LM_DBG("cseq in message (%d) longer than in via (%d)\n",
+		LM_DBG("cseq in message (%d) shorter than in via (%d)\n",
 				get_cseq(&msg)->number.len, vcseq.len-3);
 		goto done;
 	}