all: gofmt for Go 1.19

Updates #5210

Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

ipn/backend.go

@@ -162,12 +162,12 @@ type PartialFile struct {
 //
 // Various platforms currently set StateKey in different ways:
 //
-// * the macOS/iOS GUI apps set it to "ipn-go-bridge"
-// * the Android app sets it to "ipn-android"
-// * on Windows, it's the empty string (in client mode) or, via
-//   LocalBackend.userID, a string like "user-$USER_ID" (used in
-//   server mode).
-// * on Linux/etc, it's always "_daemon" (ipn.GlobalDaemonStateKey)
+//   - the macOS/iOS GUI apps set it to "ipn-go-bridge"
+//   - the Android app sets it to "ipn-android"
+//   - on Windows, it's the empty string (in client mode) or, via
+//     LocalBackend.userID, a string like "user-$USER_ID" (used in
+//     server mode).
+//   - on Linux/etc, it's always "_daemon" (ipn.GlobalDaemonStateKey)
 type StateKey string
 
 type Options struct {

ipn/ipnlocal/local.go

@@ -883,11 +883,11 @@ func (b *LocalBackend) getNewControlClientFunc() clientGen {
 // startIsNoopLocked reports whether a Start call on this LocalBackend
 // with the provided Start Options would be a useless no-op.
 //
-// TODO(apenwarr): we shouldn't need this.
-//  The state machine is now nearly clean enough where it can accept a new
-//  connection while in any state, not just Running, and on any platform.
-//  We'd want to add a few more tests to state_test.go to ensure this continues
-//  to work as expected.
+// TODO(apenwarr): we shouldn't need this. The state machine is now
+// nearly clean enough where it can accept a new connection while in
+// any state, not just Running, and on any platform.  We'd want to add
+// a few more tests to state_test.go to ensure this continues to work
+// as expected.
 //
 // b.mu must be held.
 func (b *LocalBackend) startIsNoopLocked(opts ipn.Options) bool {
@@ -2926,7 +2926,7 @@ func (b *LocalBackend) RequestEngineStatus() {
 // feed events into LocalBackend.
 //
 // TODO(apenwarr): use a channel or something to prevent re-entrancy?
-//  Or maybe just call the state machine from fewer places.
+// Or maybe just call the state machine from fewer places.
 func (b *LocalBackend) stateMachine() {
 	b.enterState(b.nextState())
 }

ipn/localapi/localapi.go

@@ -545,7 +545,7 @@ func (h *Handler) serveFileTargets(w http.ResponseWriter, r *http.Request) {
 //
 // URL format:
 //
-//    * PUT /localapi/v0/file-put/:stableID/:escaped-filename
+//   - PUT /localapi/v0/file-put/:stableID/:escaped-filename
 func (h *Handler) serveFilePut(w http.ResponseWriter, r *http.Request) {
 	if !h.PermitWrite {
 		http.Error(w, "file access denied", http.StatusForbidden)

ipn/message.go

@@ -305,8 +305,8 @@ func (bc *BackendClient) RequestStatus() {
 // MaxMessageSize is the maximum message size, in bytes.
 const MaxMessageSize = 10 << 20
 
-// TODO(apenwarr): incremental json decode?
-//  That would let us avoid storing the whole byte array uselessly in RAM.
+// TODO(apenwarr): incremental json decode? That would let us avoid
+// storing the whole byte array uselessly in RAM.
 func ReadMsg(r io.Reader) ([]byte, error) {
 	cb := make([]byte, 4)
 	_, err := io.ReadFull(r, cb)
@@ -328,10 +328,11 @@ func ReadMsg(r io.Reader) ([]byte, error) {
 	return b, nil
 }
 
-// TODO(apenwarr): incremental json encode?
-//  That would save RAM, at the expense of having to encode once so that
-//  we can produce the initial byte count.
 func WriteMsg(w io.Writer, b []byte) error {
+	// TODO(apenwarr): incremental json encode? That would save RAM, at the
+	// expense of having to encode once so that we can produce the initial byte
+	// count.
+
 	// TODO(bradfitz): this does two writes to w, which likely
 	// does two writes on the wire, two frame generations, etc. We
 	// should take a concrete buffered type, or use a sync.Pool to

ipn/store/stores.go

@@ -49,13 +49,13 @@ var knownStores map[string]Provider
 //
 // By default the following stores are registered:
 //
-//   * if the string begins with "mem:", the suffix
+//   - if the string begins with "mem:", the suffix
 //     is ignored and an in-memory store is used.
-//   * (Linux-only) if the string begins with "arn:",
+//   - (Linux-only) if the string begins with "arn:",
 //     the suffix an AWS ARN for an SSM.
-//   * (Linux-only) if the string begins with "kube:",
+//   - (Linux-only) if the string begins with "kube:",
 //     the suffix is a Kubernetes secret name
-//   * In all other cases, the path is treated as a filepath.
+//   - In all other cases, the path is treated as a filepath.
 func New(logf logger.Logf, path string) (ipn.StateStore, error) {
 	regOnce.Do(registerDefaultStores)
 	for prefix, sf := range knownStores {