minor speedup in node equals (by switching statment order in if)

src/main/java/it/unibz/inf/isochrone/network/Node.java

@@ -95,7 +95,7 @@ public class Node implements Comparable<Node> {
 		}
 
 		Node other = (Node) obj;
-		if (Double.doubleToLongBits(distance) != Double.doubleToLongBits(other.distance) || id != other.id) {
+		if (id != other.id || Double.doubleToLongBits(distance) != Double.doubleToLongBits(other.distance)) {
 			return false;
 		}