Drop user.forEachNetwork

It's a trivial for loop.

downstream.go

@@ -351,7 +351,9 @@ func (dc *downstreamConn) forEachNetwork(f func(*network)) {
 	if dc.network != nil {
 		f(dc.network)
 	} else if dc.isMultiUpstream {
-		dc.user.forEachNetwork(f)
+		for _, network := range dc.user.networks {
+			f(network)
+		}
 	}
 }
 
@@ -775,11 +777,12 @@ func (dc *downstreamConn) handleMessageUnregistered(ctx context.Context, msg *ir
 			}
 
 			var match *network
-			dc.user.forEachNetwork(func(net *network) {
+			for _, net := range dc.user.networks {
 				if net.ID == id {
 					match = net
+					break
 				}
-			})
+			}
 			if match == nil {
 				return ircError{&irc.Message{
 					Command: "FAIL",
@@ -1436,7 +1439,7 @@ func (dc *downstreamConn) welcome(ctx context.Context) error {
 
 	if dc.caps["soju.im/bouncer-networks-notify"] {
 		dc.SendBatch("soju.im/bouncer-networks", nil, nil, func(batchRef irc.TagValue) {
-			dc.user.forEachNetwork(func(network *network) {
+			for _, network := range dc.user.networks {
 				idStr := fmt.Sprintf("%v", network.ID)
 				attrs := getNetworkAttrs(network)
 				dc.SendMessage(&irc.Message{
@@ -1445,7 +1448,7 @@ func (dc *downstreamConn) welcome(ctx context.Context) error {
 					Command: "BOUNCER",
 					Params:  []string{"NETWORK", idStr, attrs.String()},
 				})
-			})
+			}
 		})
 	}
 
@@ -2748,7 +2751,7 @@ func (dc *downstreamConn) handleMessageRegistered(ctx context.Context, msg *irc.
 			}}
 		case "LISTNETWORKS":
 			dc.SendBatch("soju.im/bouncer-networks", nil, nil, func(batchRef irc.TagValue) {
-				dc.user.forEachNetwork(func(network *network) {
+				for _, network := range dc.user.networks {
 					idStr := fmt.Sprintf("%v", network.ID)
 					attrs := getNetworkAttrs(network)
 					dc.SendMessage(&irc.Message{
@@ -2757,7 +2760,7 @@ func (dc *downstreamConn) handleMessageRegistered(ctx context.Context, msg *irc.
 						Command: "BOUNCER",
 						Params:  []string{"NETWORK", idStr, attrs.String()},
 					})
-				})
+				}
 			})
 		case "ADDNETWORK":
 			var attrsStr string

service.go

@@ -506,7 +506,7 @@ func handleServiceNetworkCreate(ctx context.Context, dc *downstreamConn, params
 
 func handleServiceNetworkStatus(ctx context.Context, dc *downstreamConn, params []string) error {
 	n := 0
-	dc.user.forEachNetwork(func(net *network) {
+	for _, net := range dc.user.networks {
 		var statuses []string
 		var details string
 		if uc := net.conn; uc != nil {
@@ -541,7 +541,7 @@ func handleServiceNetworkStatus(ctx context.Context, dc *downstreamConn, params
 		sendServicePRIVMSG(dc, s)
 
 		n++
-	})
+	}
 
 	if n == 0 {
 		sendServicePRIVMSG(dc, `No network configured, add one with "network create".`)
@@ -969,7 +969,9 @@ func handleServiceChannelStatus(ctx context.Context, dc *downstreamConn, params
 	}
 
 	if *networkName == "" {
-		dc.user.forEachNetwork(sendNetwork)
+		for _, net := range dc.user.networks {
+			sendNetwork(net)
+		}
 	} else {
 		net := dc.user.getNetwork(*networkName)
 		if net == nil {

user.go

@@ -464,12 +464,6 @@ func newUser(srv *Server, record *User) *user {
 	}
 }
 
-func (u *user) forEachNetwork(f func(*network)) {
-	for _, network := range u.networks {
-		f(network)
-	}
-}
-
 func (u *user) forEachUpstream(f func(uc *upstreamConn)) {
 	for _, network := range u.networks {
 		if network.conn == nil {
@@ -992,11 +986,11 @@ func (u *user) updateUser(ctx context.Context, record *User) error {
 	if realnameUpdated {
 		// Re-connect to networks which use the default realname
 		var needUpdate []Network
-		u.forEachNetwork(func(net *network) {
+		for _, net := range u.networks {
 			if net.Realname == "" {
 				needUpdate = append(needUpdate, net.Network)
 			}
-		})
+		}
 
 		var netErr error
 		for _, net := range needUpdate {