Merge branch 'qt-master-from-4.7' of scm.dev.nokia.troll.no:qt/qt-integration into master-integration

* 'qt-master-from-4.7' of scm.dev.nokia.troll.no:qt/qt-integration: (60 commits)
  Fix QTBUG-17627: build break in mobility bearer applications
  Add the missing image for doc of QNetworkSession.
  Remove Qt dependancy to SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
  Fix QPlainTextEdit corruption/crash with scrolling
  DelayRemove of list delegate on section boundary duplicated section
  add gsm to connectable bearer for networkmanager.
  ListView and GridView indexAt should use qreal coordinates.
  Prevent infinite loop in raster engine on zero dash pattern length.
  Cocoa: Sheets looses focus when moving parent window
  Removing tabs from 7388fcb83592a90aace054314e0c3e7e7a94fdae changeset
  Fix QNetworkConfigurationManager crash due to null private pointer.
  Fix animations with alwaysRunToEnd that are frequently stopped/started.
  Fix auto test failure on mac.
  Update QtGui def files
  Another stab at fixing compilation on old Symbian platforms
  Prevent an animation from being registered to run twice.
  Add missing test file.
  Add selected P1 tasks to changes file.
  Added support for QMAKE_CLEAN in symbian-sbsv2
  Only add NetworkServices capability automatically if no caps are set.
  ...

1 files changed, 6 insertions, 5 deletions

diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
index d03babb..21c9d3b 100644
--- a/src/gui/itemviews/qtreeview.cpp
+++ b/src/gui/itemviews/qtreeview.cpp
@@ -2744,6 +2744,7 @@ int QTreeView::indexRowSizeHint(const QModelIndex &index) const
 
     int start = -1;
     int end = -1;
+    int indexRow = index.row();
     int count = d->header->count();
     bool emptyHeader = (count == 0);
     QModelIndex parent = index.parent();
@@ -2780,7 +2781,7 @@ int QTreeView::indexRowSizeHint(const QModelIndex &index) const
         int logicalColumn = emptyHeader ? column : d->header->logicalIndex(column);
         if (d->header->isSectionHidden(logicalColumn))
             continue;
-        QModelIndex idx = d->model->index(index.row(), logicalColumn, parent);
+        QModelIndex idx = d->model->index(indexRow, logicalColumn, parent);
         if (idx.isValid()) {
             QWidget *editor = d->editorForIndex(idx).widget.data();
             if (editor && d->persistent.contains(editor)) {
@@ -3215,14 +3216,14 @@ int QTreeViewPrivate::itemHeight(int item) const
     if (viewItems.isEmpty())
         return 0;
     const QModelIndex &index = viewItems.at(item).index;
+    if (!index.isValid())
+        return 0;
     int height = viewItems.at(item).height;
-    if (height <= 0 && index.isValid()) {
+    if (height <= 0) {
         height = q_func()->indexRowSizeHint(index);
         viewItems[item].height = height;
     }
-    if (!index.isValid() || height < 0)
-        return 0;
-    return height;
+    return qMax(height, 0);
 }