skip doing 2 queries if all addresses are active (only in new imported wallets, mainly)

lib/server.js

@@ -1311,6 +1311,12 @@ WalletService.prototype._getBalanceOneStep = function(opts, cb) {
 
     self.storage.fetchAddresses(self.walletId, function(err, addresses) {
       if (err) return cb(err);
+
+      if (addresses.length == opts.alreadyQueriedLength) {
+        log.info('Query Skipped, all active addresses');
+        return cb(null,null, true);
+      }
+
       self._getBalanceFromAddresses({
         coin: opts.coin,
         addresses: addresses
@@ -1435,13 +1441,16 @@ WalletService.prototype.getBalance = function(opts, cb, i) {
 
             setTimeout(function() {
               log.debug('Running full balance query');
-              self._getBalanceOneStep(opts, function(err, fullBalance) {
+              opts.alreadyQueriedLength = activeAddresses.length;
+              self._getBalanceOneStep(opts, function(err, fullBalance, skipped) {
                 if (err) return;
-                if (!_.isEqual(partialBalance, fullBalance)) {
+                if (!skipped && !_.isEqual(partialBalance, fullBalance)) {
                   log.info('Balance in active addresses differs from final balance');
                   self._notify('BalanceUpdated', fullBalance, {
                     isGlobal: true
                   });
+                } else if (skipped) {
+                  return;
                 } else {
                   // updates cache
                   twoStepCache.lastEmpty = now;