Merge "Revert "Revert "NPE in TwoPaneController""" into jb-ub-mail-ur10
diff --git a/src/com/android/mail/ui/TwoPaneController.java b/src/com/android/mail/ui/TwoPaneController.java
index 0269b56..8588163 100644
--- a/src/com/android/mail/ui/TwoPaneController.java
+++ b/src/com/android/mail/ui/TwoPaneController.java
@@ -425,7 +425,7 @@
             // folder list has had a chance to initialize.
             final FolderListFragment folderList = getFolderListFragment();
             if (mode == ViewMode.CONVERSATION_LIST && folderList != null
-                    && mFolder.parent != Uri.EMPTY) {
+                    && mFolder != null && mFolder.parent != Uri.EMPTY) {
                 // If the user navigated via the left folders list into a child folder,
                 // back should take the user up to the parent folder's conversation list.
                 navigateUpFolderHierarchy();