check for funds before spread notes

src/controller.cpp

@@ -187,9 +187,10 @@ void Controller::fillTxJsonParams(json& allRecepients, Tx tx)
         dust.at(i)["memo"] = randomString.toStdString();
 
     }
-
-     // Create more Notes if spendableNotesCount < 30
-   if (spendableNotesCount < 30) {
+        CAmount balanceAvailable = getModel()->getBalVerified();
+        
+     // Create more Notes if spendableNotesCount < 30 and enough funds are available
+   if (spendableNotesCount < 30 || balanceAvailable.toDecimalhushString().toDouble() > (dust.size() * 0.0001)) {
         // Create extra transaction
         for (size_t i = 0; i < dust.size(); ++i) {
             // Generate random memo
@@ -218,7 +219,7 @@ void Controller::fillTxJsonParams(json& allRecepients, Tx tx)
         rec["amount"]  = toAddr.amount.toqint64();
         if (Settings::isZAddress(toAddr.addr) && !toAddr.memo.trimmed().isEmpty())
         rec["memo"] = toAddr.memo.toStdString();
-        }
+    }
 
         allRecepients.push_back(rec);
 
@@ -1523,7 +1524,6 @@ void Controller::executeStandardUITransaction(Tx tx)
     );
 }
 
-
 // Execute a transaction!
 void Controller::executeTransaction(Tx tx, 
         const std::function<void(QString txid)> submitted,