qt: Use new Qt5 connect syntax

src/qt/test/paymentservertests.cpp

@@ -39,8 +39,8 @@ X509 *parse_b64der_cert(const char* cert_data)
 static SendCoinsRecipient handleRequest(PaymentServer* server, std::vector<unsigned char>& data)
 {
     RecipientCatcher sigCatcher;
-    QObject::connect(server, SIGNAL(receivedPaymentRequest(SendCoinsRecipient)),
-        &sigCatcher, SLOT(getRecipient(SendCoinsRecipient)));
+    QObject::connect(server, &PaymentServer::receivedPaymentRequest,
+        &sigCatcher, &RecipientCatcher::getRecipient);
 
     // Write data to a temp file:
     QTemporaryFile f;
@@ -57,8 +57,8 @@ static SendCoinsRecipient handleRequest(PaymentServer* server, std::vector<unsig
     // which will lead to a test failure anyway.
     QCoreApplication::sendEvent(&object, &event);
 
-    QObject::disconnect(server, SIGNAL(receivedPaymentRequest(SendCoinsRecipient)),
-        &sigCatcher, SLOT(getRecipient(SendCoinsRecipient)));
+    QObject::disconnect(server, &PaymentServer::receivedPaymentRequest,
+        &sigCatcher, &RecipientCatcher::getRecipient);
 
     // Return results from sigCatcher
     return sigCatcher.recipient;

src/qt/test/util.cpp

@@ -18,5 +18,5 @@ void ConfirmMessage(QString* text, int msec)
             }
         }
         delete callback;
-    }), SLOT(call()));
+    }), &Callback::call);
 }

src/qt/test/wallettests.cpp

@@ -50,7 +50,7 @@ void ConfirmSend(QString* text = nullptr, bool cancel = false)
             }
         }
         delete callback;
-    }), SLOT(call()));
+    }), &Callback::call);
 }
 
 //! Send coins to address and return txid.