Fixing crash where we were assuming an old parent hierarchy.

Change-Id: I5acccab175c150f2fb994e58f0b5592d2015fcfe
diff --git a/src/com/android/launcher2/FolderIcon.java b/src/com/android/launcher2/FolderIcon.java
index dd83c78..bbc3409 100644
--- a/src/com/android/launcher2/FolderIcon.java
+++ b/src/com/android/launcher2/FolderIcon.java
@@ -43,7 +43,10 @@
     }
 
     public boolean isDropEnabled() {
-        return !((Workspace)getParent().getParent()).isSmall();
+        final ViewGroup cellLayoutChildren = (ViewGroup) getParent();
+        final ViewGroup cellLayout = (ViewGroup) cellLayoutChildren.getParent();
+        final Workspace workspace = (Workspace) cellLayout.getParent();
+        return !workspace.isSmall();
     }
 
     static FolderIcon fromXml(int resId, Launcher launcher, ViewGroup group,