[Effen] Only skip rows we're showing, when skipping past the rows that we've scrolled beyond in the…

sky/examples/stocks/lib/stock_list.dart

Index: sky/examples/stocks/lib/stock_list.dart
diff --git a/sky/examples/stocks/lib/stock_list.dart b/sky/examples/stocks/lib/stock_list.dart
index 4ad488ac2d98297af16f654a9fde1c7c1b4f29f2..2e6e5bbf1d9db5e92f85d7b4edcb8dd200bc0f48 100644
--- a/sky/examples/stocks/lib/stock_list.dart
+++ b/sky/examples/stocks/lib/stock_list.dart
@@ -20,9 +20,9 @@ class Stocklist extends FixedHeightScrollable {
 
   List<UINode> buildItems(int start, int count) {
     return stocks
-      .skip(start)
       .where((stock) => query == null || stock.symbol.contains(
           new RegExp(query, caseSensitive: false)))
+      .skip(start)
       .take(count)
       .map((stock) => new StockRow(stock: stock))
       .toList(growable: false);