Push the data together with the error in the synchronous case.

As it turns out some test cases in QtWebKit rely on this.

Task-number: QTBUG-19556
Change-Id: I84c8abca5e9a018a4057c827fca973b8ebb39df6
Reviewed-on: http://codereview.qt.nokia.com/795
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Markus Goetz

src/network/access/qnetworkreplyhttpimpl.cpp

@@ -876,6 +876,7 @@ void QNetworkReplyHttpImplPrivate::postRequest()
                      delegate->isPipeliningUsed,
                      QSharedPointer<char>(),
                      delegate->incomingContentLength);
+            replyDownloadData(delegate->synchronousDownloadData);
             httpError(delegate->incomingErrorCode, delegate->incomingErrorDetail);
         } else {
             replyDownloadMetaData