remove condition for first hop commitment signed dance

Author: alexanderwiederin

lightning/src/ln/functional_test_utils.rs

@@ -2260,11 +2260,9 @@ fn fail_payment_along_path<'a, 'b, 'c>(expected_path: &[&Node<'a, 'b, 'c>]) {
 		prev_node.node.handle_update_fail_htlc(&node.node.get_our_node_id(), &updates.update_fail_htlcs[0]);
 		check_added_monitors!(prev_node, 0);
 
-		if origin_node_id == prev_node.node.get_our_node_id() {
-			commitment_signed_dance!(prev_node, node, updates.commitment_signed, false);
-		} else {
-			commitment_signed_dance!(prev_node, node, updates.commitment_signed, true);
-		}
+		let is_first_hop = origin_node_id == prev_node.node.get_our_node_id();
+		// We do not want to fail backwards on the first hop. All other hops should fail backwards.
+		commitment_signed_dance!(prev_node, node, updates.commitment_signed, !is_first_hop);
 	}
 }