QtQuick: Micro-optimize iterator loops.

Avoid repeated instantiation of end() in loops, use variable instead.

Change-Id: I6ab1fe2b82406d5ee91710a0333587ffb82c04d4
Reviewed-by: Erik Verbruggen <erik.verbruggen@theqtcompany.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/quick/designer/designersupport.cpp b/src/quick/designer/designersupport.cpp
index fe61340859..56d2badb62 100644
--- a/src/quick/designer/designersupport.cpp
+++ b/src/quick/designer/designersupport.cpp
@@ -57,9 +57,9 @@ DesignerSupport::DesignerSupport()
 
 DesignerSupport::~DesignerSupport()
 {
-    QHash<QQuickItem*, QSGLayer*>::iterator iterator;
+    typedef QHash<QQuickItem*, QSGLayer*>::iterator ItemTextureHashIt;
 
-    for (iterator = m_itemTextureHash.begin(); iterator != m_itemTextureHash.end(); ++iterator) {
+    for (ItemTextureHashIt iterator = m_itemTextureHash.begin(), end = m_itemTextureHash.end(); iterator != end; ++iterator) {
         QSGLayer *texture = iterator.value();
         QQuickItem *item = iterator.key();
         QQuickItemPrivate::get(item)->derefFromEffectItem(true);