minor fixes

lib/bcoin/address.js

@@ -22,6 +22,9 @@ function Address(options) {
   if (!(this instanceof Address))
     return new Address(options);
 
+  if (options instanceof Address)
+    return options;
+
   EventEmitter.call(this);
 
   if (!options)

lib/bcoin/wallet.js

@@ -242,6 +242,8 @@ Wallet.prototype._initAddresses = function() {
   assert(!this._initialized);
   this._initialized = true;
 
+  delete this.current;
+
   options.addresses.forEach(function(address) {
     address = this.addAddress(address);
     if (!this.hd) {