Make sure we can open local files as well.

Reviewed-by: ck

src/plugins/help/helpviewer.cpp

@@ -94,13 +94,7 @@ struct ExtensionMap {
 
 bool HelpViewer::isLocalUrl(const QUrl &url)
 {
-    const QString &scheme = url.scheme();
-    return scheme.isEmpty()
-        || scheme == QLatin1String("file")
-        || scheme == QLatin1String("qrc")
-        || scheme == QLatin1String("data")
-        || scheme == QLatin1String("qthelp")
-        || scheme == QLatin1String("about");
+    return url.scheme() == QLatin1String("qthelp");
 }
 
 bool HelpViewer::canOpenPage(const QString &url)

src/plugins/help/helpviewer_qwv.cpp

@@ -124,10 +124,8 @@ HelpNetworkAccessManager::HelpNetworkAccessManager(QObject *parent)
 QNetworkReply *HelpNetworkAccessManager::createRequest(Operation op,
     const QNetworkRequest &request, QIODevice* outgoingData)
 {
-    if (!HelpViewer::isLocalUrl(request.url())
-        && request.url().scheme() == QLatin1String("http")) {
+    if (!HelpViewer::isLocalUrl(request.url()))
         return QNetworkAccessManager::createRequest(op, request, outgoingData);
-    }
 
     QString url = request.url().toString();
     const QHelpEngineCore &engine = LocalHelpManager::helpEngine();