Merge change 8027

* changes:
  wire appcache to HTML5 UI
diff --git a/src/com/android/browser/BrowserHistoryPage.java b/src/com/android/browser/BrowserHistoryPage.java
index e333416..d5e7049 100644
--- a/src/com/android/browser/BrowserHistoryPage.java
+++ b/src/com/android/browser/BrowserHistoryPage.java
@@ -303,6 +303,9 @@
         }
         
         void refreshData() {
+            if (mCursor.isClosed()) {
+                return;
+            }
             mCursor.requery();
             buildMap();
             for (DataSetObserver o : mObservers) {