Fix insertion of one item in ListView.

Off-by-one meant that the item was not created by the ListView.

Change-Id: If9658487a615e189c21c419e4d29e7e709e05cef
Fixes: QTBUG-19675
Reviewed-on: http://codereview.qt.nokia.com/2251
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Bea Lam <bea.lam@nokia.com>

src/qtquick1/graphicsitems/qdeclarativelistview.cpp

@@ -3287,7 +3287,7 @@ void QDeclarative1ListView::itemsInserted(int modelIndex, int count)
         }
     } else {
         int i = 0;
-        int to = d->buffer+tempPos+d->size()-1;
+        int to = d->buffer+tempPos+d->size();
         for (i = 0; i < count && pos <= to; ++i) {
             if (!addedVisible) {
                 d->scheduleLayout();

tests/auto/declarative/qsglistview/tst_qsglistview.cpp

@@ -620,6 +620,14 @@ void tst_QSGListView::inserted()
 
 //    QTRY_COMPARE(listview->contentItemHeight(), model.count() * 20.0);
 
+    // QTBUG-19675
+    model.clear();
+    model.insertItem(0, "Hello", "1234");
+    QSGItem *item = findItem<QSGItem>(contentItem, "wrapper", 0);
+    QVERIFY(item);
+    QCOMPARE(item->y(), 0.);
+    QVERIFY(listview->contentY() == 0);
+
     delete canvas;
     delete testObject;
 }

tests/auto/qtquick1/qdeclarativelistview/tst_qdeclarativelistview.cpp

@@ -557,6 +557,14 @@ void tst_QDeclarative1ListView::inserted()
 
 //    QTRY_COMPARE(listview->contentItemHeight(), model.count() * 20.0);
 
+    // QTBUG-19675
+    model.clear();
+    model.insertItem(0, "Hello", "1234");
+    QDeclarativeItem *item = findItem<QDeclarativeItem>(contentItem, "wrapper", 0);
+    QVERIFY(item);
+    QCOMPARE(item->y(), 0.);
+    QVERIFY(listview->contentY() == 0);
+
     delete canvas;
     delete testObject;
 }