fix check node1Err !=nil but return a nil value error err

Signed-off-by: alingse <alingse@foxmail.com>

brontide/noise_test.go

@@ -85,12 +85,12 @@ func establishTestConnection(t testing.TB) (net.Conn, net.Conn, error) {
 
 	remote := <-remoteConnChan
 	if remote.err != nil {
-		return nil, nil, err
+		return nil, nil, remote.err
 	}
 
 	local := <-localConnChan
 	if local.err != nil {
-		return nil, nil, err
+		return nil, nil, local.err
 	}
 
 	t.Cleanup(func() {

graph/db/graph.go

@@ -1130,7 +1130,7 @@ func (c *ChannelGraph) addChannelEdge(tx kvdb.RwTx,
 				"for: %x: %w", edge.NodeKey1Bytes, err)
 		}
 	case node1Err != nil:
-		return err
+		return node1Err
 	}
 
 	_, node2Err := fetchLightningNode(nodes, edge.NodeKey2Bytes[:])
@@ -1146,7 +1146,7 @@ func (c *ChannelGraph) addChannelEdge(tx kvdb.RwTx,
 				"for: %x: %w", edge.NodeKey2Bytes, err)
 		}
 	case node2Err != nil:
-		return err
+		return node2Err
 	}
 
 	// If the edge hasn't been created yet, then we'll first add it to the