fix issue with retrieving active addresses

lib/server.js

@@ -1059,9 +1059,9 @@ WalletService.prototype._getActiveAddresses = function(cb) {
       var result = _.union(active, recent);
 
       var index = _.indexBy(allAddresses, 'address');
-      result = _.map(result, function(r) {
+      result = _.compact(_.map(result, function(r) {
         return index[r];
-      });
+      }));
       return cb(null, result);
     });
   });