Gui: use const (and const APIs) more

For CoW types, prefer const methods to avoid needless detach()ing.

Change-Id: I88d08d499e1be72c1f6d983fecdcee513df18aa2
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

1 files changed, 3 insertions, 6 deletions

diff --git a/src/gui/itemmodels/qstandarditemmodel.cpp b/src/gui/itemmodels/qstandarditemmodel.cpp
index 6f30f0ea25..3861eb8b40 100644
--- a/src/gui/itemmodels/qstandarditemmodel.cpp
+++ b/src/gui/itemmodels/qstandarditemmodel.cpp
@@ -3027,10 +3027,7 @@ QMimeData *QStandardItemModel::mimeData(const QModelIndexList &indexes) const
             for (int i = 0; i < childList.count(); ++i) {
                 QStandardItem *chi = childList.at(i);
                 if (chi) {
-                    QSet<QStandardItem *>::iterator it = itemsSet.find(chi);
-                    if (it != itemsSet.end()) {
-                        itemsSet.erase(it);
-                    }
+                    itemsSet.erase(itemsSet.constFind(chi));
                     stack.push(chi);
                 }
             }
@@ -3139,13 +3136,13 @@ bool QStandardItemModel::dropMimeData(const QMimeData *data, Qt::DropAction acti
     for (int i = 0; i < rows.count(); ++i)
         rowsToInsert[rows.at(i)] = 1;
     for (int i = 0; i < rowsToInsert.count(); ++i) {
-        if (rowsToInsert[i] == 1){
+        if (rowsToInsert.at(i) == 1){
             rowsToInsert[i] = dragRowCount;
             ++dragRowCount;
         }
     }
     for (int i = 0; i < rows.count(); ++i)
-        rows[i] = top + rowsToInsert[rows[i]];
+        rows[i] = top + rowsToInsert.at(rows.at(i));
 
     QBitArray isWrittenTo(dragRowCount * dragColumnCount);