misc: Fix typos and spelling errors

util/errwrap/errwrap.go

@@ -58,7 +58,7 @@ func Append(reterr, err error) error {
 }
 
 // String returns a string representation of the error. In particular, if the
-// error is nil, it returns an empty string instead of panicing.
+// error is nil, it returns an empty string instead of panicking.
 func String(err error) string {
 	if err == nil {
 		return ""

util/socketset/socketset.go

@@ -151,7 +151,7 @@ type UEvent struct {
 }
 
 // ReceiveUEvent is a wrapper around ReceiveBytes. Parses the UEvent data
-// receieved from the socket and puts it into a UEvent struct.
+// received from the socket and puts it into a UEvent struct.
 func (obj *SocketSet) ReceiveUEvent() (*UEvent, error) {
 	// TODO: can multiple events come in the same socket?
 	event := &UEvent{Data: map[string]string{}}

util/sync.go

@@ -180,7 +180,7 @@ func (obj *EasyExit) Error() error {
 // instantiated before it can be used. It must not be copied after first use. It
 // is equivalent to receiving a multicast signal from a closing channel, except
 // that it must be acknowledged by every reader of the signal, and once this is
-// done, it is reset and can be re-used. Readers must obtain a handle to the
+// done, it is reset and can be reused. Readers must obtain a handle to the
 // signal with the Subscribe method, and the signal is sent out with the Done
 // method.
 type SubscribedSignal struct {
@@ -239,7 +239,7 @@ func (obj *SubscribedSignal) Send() {
 
 	obj.exit = make(chan struct{}) // reset
 
-	// release (re-use the above mutex)
+	// release (reuse the above mutex)
 }
 
 // BoundedReadSemaphore is a mutex that allows multiple Lock operations to occur