am 9902196f: Fix npe in getCacheTotalSize.

Merge commit '9902196f9885d369e37cf44084e3f04513511ab0' into gingerbread-plus-aosp

* commit '9902196f9885d369e37cf44084e3f04513511ab0':
  Fix npe in getCacheTotalSize.

core/java/android/webkit/WebViewDatabase.java

@@ -727,6 +727,9 @@ public class WebViewDatabase {
     }
 
     long getCacheTotalSize() {
+        if (mCacheDatabase == null) {
+            return 0;
+        }
         long size = 0;
         Cursor cursor = null;
         final String query = "SELECT SUM(contentlength) as sum FROM cache";