Use networkError instead of error

It was deprecated.

Task-number: QTBUG-80369
Change-Id: I8374abca51d8b61e33f2b9d74048916dcb9c615b
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

doc/src/snippets/webkit/imageanalyzer/imageanalyzer.cpp

@@ -168,8 +168,8 @@ void ImageAnalyzer::fetchURLs()
 void ImageAnalyzer::handleReply(QNetworkReply * pReply)
 {
     m_outstandingFetches--;
-    if (pReply->error()) {
-        qDebug() << "Error code" << pReply->error();
+    if (pReply->networkError()) {
+        qDebug() << "Error code" << pReply->networkError();
         qDebug() << "Http code" << pReply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
         return;
     }