Simpliefy code, return early on error

src/net/toxme.cpp

@@ -38,18 +38,17 @@ QByteArray Toxme::makeJsonRequest(QString url, QString json, QNetworkReply::Netw
     request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
     QNetworkReply* reply = netman.post(request,json.toUtf8());
 
-    while (reply->isRunning()) {
+    while (!reply->isFinished())
-        error = reply->error();
+    {
-        if (error)
-            break;
-
-        reply->waitForReadyRead(100);
         qApp->processEvents();
     }
 
     error = reply->error();
     if (error)
-        qWarning() << "makeJsonRequest: A network error occured:" << error.errorString();
+    {
+        qWarning() << "makeJsonRequest: A network error occured:" << reply->errorString();
+        return QByteArray();
+    }
 
     return reply->readAll();
 }
@@ -65,18 +64,17 @@ QByteArray Toxme::getServerPubkey(QString url, QNetworkReply::NetworkError &erro
     request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");
     QNetworkReply* reply = netman.get(request);
 
-    while (reply->isRunning()) {
+    while (!reply->isFinished())
-        error = reply->error();
+    {
-        if (error)
-            break;
-
-        reply->waitForReadyRead(100);
         qApp->processEvents();
     }
 
     error = reply->error();
     if (error)
-        qWarning() << "getServerPubkey: A network error occured:" << error.errorString();
+    {
+        qWarning() << "getServerPubkey: A network error occured:" << reply->errorString();
+        return QByteArray();
+    }
 
     // Extract key
     static const QByteArray pattern{"key\":\""};