QtWidgets: replace some Q_FOREACH loops with C++11 range-for

This needs to be handled a bit carefully, because Qt containers
will detach upon being iterated over using range-for.

In the cases of this patch, that cannot happen, because all
containers are marked as const (either by this patch or before).

Separate patches will deal with other situations.

Range-for loops are much more efficient than foreach loops.

This patch shaves almost 3K of text size off an optimized Linux
AMD64 GCC 4.9 build.

Change-Id: I7b1d41db4d9b5db8b515cb75686dc5135177da68
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/widgets/widgets/qabstractscrollarea.cpp b/src/widgets/widgets/qabstractscrollarea.cpp
index ed6b039c7c..946d683bf0 100644
--- a/src/widgets/widgets/qabstractscrollarea.cpp
+++ b/src/widgets/widgets/qabstractscrollarea.cpp
@@ -469,7 +469,7 @@ void QAbstractScrollAreaPrivate::layoutChildren()
     if ((vscrollOverlap > 0 && needv) || (hscrollOverlap > 0 && needh)) {
         const QList<QHeaderView *> headers = q->findChildren<QHeaderView*>();
         if (headers.count() <= 2) {
-            Q_FOREACH (const QHeaderView *header, headers) {
+            for (const QHeaderView *header : headers) {
                 const QRect geo = header->geometry();
                 if (header->orientation() == Qt::Vertical && header->isVisible() && QStyle::visualRect(opt.direction, opt.rect, geo).left() <= opt.rect.width() / 2)
                     vHeaderRight = QStyle::visualRect(opt.direction, opt.rect, geo).right();