Handle 0 change case

src/sendtab.cpp

@@ -413,8 +413,10 @@ Tx MainWindow::createTxFromSendPage() {
         if (saplingAddr != rpc->getAllZAddresses()->end()) {
             double change = rpc->getAllBalances()->value(tx.fromAddr) - totalAmt - tx.fee;
 
-            QString changeMemo = "Change from " + tx.fromAddr;
-            tx.toAddrs.push_back( ToFields{*saplingAddr, change, changeMemo, changeMemo.toUtf8().toHex()} );
+            if (Settings::getDecimalString(change) != "0") {
+                QString changeMemo = "Change from " + tx.fromAddr;
+                tx.toAddrs.push_back(ToFields{ *saplingAddr, change, changeMemo, changeMemo.toUtf8().toHex() });
+            }
         }
     }
     

src/settings.cpp

@@ -143,9 +143,12 @@ QString Settings::getUSDFormat(double bal) {
 
 QString Settings::getDecimalString(double amt) {
     QString f = QString::number(amt, 'f', 8);
+
     while (f.contains(".") && (f.right(1) == "0" || f.right(1) == ".")) {
         f = f.left(f.length() - 1);
     }
+    if (f == "-0")
+        f = "0";
 
     return f;
 }