src/wallet: getNextAddresss: add new address if necessary

Author: booo

src/wallet.js

@@ -95,13 +95,11 @@ Bitcoin.Wallet = (function () {
  };
 
  this.getNextAddress = function () {
- if (keys.length) {
- // TODO: Create new addresses if we run out
- this.addressPointer = (this.addressPointer + 1) % keys.length;
- return keys[this.addressPointer].getBitcoinAddress();
- } else {
- return null;
+ this.addressPointer++;
+ if(!keys[this.addressPointer]) {
+ this.generateAddress();
  }
+ return keys[this.addressPointer].getBitcoinAddress();
  };
 
  this.signWithKey = function (pubKeyHash, hash) {