Reduce allocations by using reserve()

Change-Id: If34fa53402985f6b3c5e7217bce4a1177af835b6
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/tools/uic/cpp/cppwriteinitialization.cpp b/src/tools/uic/cpp/cppwriteinitialization.cpp
index b02e2dc0ed..9c2d7cbc2c 100644
--- a/src/tools/uic/cpp/cppwriteinitialization.cpp
+++ b/src/tools/uic/cpp/cppwriteinitialization.cpp
@@ -2200,8 +2200,10 @@ QList<WriteInitialization::Item *> WriteInitialization::initializeTreeWidgetItem
 {
     // items
     QList<Item *> items;
+    const int numDomItems = domItems.size();
+    items.reserve(numDomItems);
 
-    for (int i = 0; i < domItems.size(); ++i) {
+    for (int i = 0; i < numDomItems; ++i) {
         const DomItem *domItem = domItems.at(i);
 
         Item *item = new Item(QLatin1String("QTreeWidgetItem"), m_indent, m_output, m_refreshOut, m_driver);