waddrmgr: rename ambiguous scriptCT to scriptClearText

Since CT can mean both Cipher Text as well as Clear Text, the variable
name scriptCT lead to confusion about its meaning. We rename it to make
it more clear how it's used.

waddrmgr/address.go

@@ -508,7 +508,7 @@ type scriptAddress struct {
 	account         uint32
 	address         *btcutil.AddressScriptHash
 	scriptEncrypted []byte
-	scriptCT        []byte
+	scriptClearText []byte
 	scriptMutex     sync.Mutex
 }
 
@@ -524,7 +524,7 @@ func (a *scriptAddress) unlock(key EncryptorDecryptor) ([]byte, error) {
 	a.scriptMutex.Lock()
 	defer a.scriptMutex.Unlock()
 
-	if len(a.scriptCT) == 0 {
+	if len(a.scriptClearText) == 0 {
 		script, err := key.Decrypt(a.scriptEncrypted)
 		if err != nil {
 			str := fmt.Sprintf("failed to decrypt script for %s",
@@ -532,20 +532,20 @@ func (a *scriptAddress) unlock(key EncryptorDecryptor) ([]byte, error) {
 			return nil, managerError(ErrCrypto, str, err)
 		}
 
-		a.scriptCT = script
+		a.scriptClearText = script
 	}
 
-	scriptCopy := make([]byte, len(a.scriptCT))
-	copy(scriptCopy, a.scriptCT)
+	scriptCopy := make([]byte, len(a.scriptClearText))
+	copy(scriptCopy, a.scriptClearText)
 	return scriptCopy, nil
 }
 
-// lock zeroes the associated clear text private key.
+// lock zeroes the associated clear text script.
 func (a *scriptAddress) lock() {
 	// Zero and nil the clear text script associated with this address.
 	a.scriptMutex.Lock()
-	zero.Bytes(a.scriptCT)
-	a.scriptCT = nil
+	zero.Bytes(a.scriptClearText)
+	a.scriptClearText = nil
 	a.scriptMutex.Unlock()
 }
 

waddrmgr/scoped_manager.go

@@ -2114,8 +2114,8 @@ func (s *ScopedKeyManager) ImportScript(ns walletdb.ReadWriteBucket,
 		return nil, err
 	}
 	if !s.rootManager.WatchOnly() {
-		scriptAddr.scriptCT = make([]byte, len(script))
-		copy(scriptAddr.scriptCT, script)
+		scriptAddr.scriptClearText = make([]byte, len(script))
+		copy(scriptAddr.scriptClearText, script)
 	}
 
 	// Add the new managed address to the cache of recent addresses and