Fix issues found by golint.

account.go

@@ -247,7 +247,7 @@ func (a *Account) Track() {
 	a.UtxoStore.RUnlock()
 }
 
-// RescanActiveAddresse requests btcd to rescan the blockchain for new
+// RescanActiveAddresses requests btcd to rescan the blockchain for new
 // transactions to all active wallet addresses.  This is needed for
 // catching btcwallet up to a long-running btcd process, as otherwise
 // it would have missed notifications as blocks are attached to the

wallet/wallet.go

@@ -712,9 +712,8 @@ func (w *Wallet) NextUnusedAddress() (string, error) {
 	if !ok {
 		// TODO(jrick): Re-fill key pool.
 		return "", errors.New("cannot find generated address")
-	} else {
-		w.highestUsed++
 	}
+	w.highestUsed++
 
 	// Look up address.
 	addr := w.addrMap[next160]