Use QVector instead of QList for sizeof(T) > sizeof(void*)

caught with static analyzer which only warns for trivial cases:
- Container must be local
- Container isn't passed to any function, assigned to another
container or assigned to.

Change-Id: I3f3aa73c128a56f067fa8745990977445a495ac4
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

src/network/access/qspdyprotocolhandler.cpp

@@ -476,7 +476,7 @@ QByteArray QSpdyProtocolHandler::composeHeader(const QHttpNetworkRequest &reques
     // calculate additional headers first, because we need to know the size
     // ### do not partially copy the list, but restrict the set header fields
     // in QHttpNetworkConnection
-    QList<QPair<QByteArray, QByteArray> > additionalHeaders;
+    QVector<QPair<QByteArray, QByteArray> > additionalHeaders;
     for (int a = 0; a < request.header().count(); ++a) {
         QByteArray key = request.header().at(a).first;
         if (key == "Connection" || key == "Host" || key == "Keep-Alive"

src/widgets/dialogs/qfiledialog.cpp

@@ -3452,7 +3452,7 @@ void QFileDialogPrivate::_q_autoCompleteFileName(const QString &text)
     const QStringList multipleFiles = typedFiles();
     if (multipleFiles.count() > 0) {
         QModelIndexList oldFiles = qFileDialogUi->listView->selectionModel()->selectedRows();
-        QModelIndexList newFiles;
+        QVector<QModelIndex> newFiles;
         for (const auto &file : multipleFiles) {
             QModelIndex idx = model->index(file);
             if (oldFiles.removeAll(idx) == 0)

src/widgets/itemviews/qcolumnview.cpp

@@ -568,7 +568,7 @@ void QColumnViewPrivate::closeColumns(const QModelIndex &parent, bool build)
     bool clearAll = !parent.isValid();
     bool passThroughRoot = false;
 
-    QList<QModelIndex> dirsToAppend;
+    QVector<QModelIndex> dirsToAppend;
 
     // Find the last column that matches the parent's tree
     int currentColumn = -1;