Fixing NPE in ContactEditorFragment

Bug: 3351000

Change-Id: I4c16d6e4b1e6c40caca7b94c5a4ea9e4e060e2ba
diff --git a/src/com/android/contacts/editor/ContactEditorFragment.java b/src/com/android/contacts/editor/ContactEditorFragment.java
index e104bc5..ea9506d 100644
--- a/src/com/android/contacts/editor/ContactEditorFragment.java
+++ b/src/com/android/contacts/editor/ContactEditorFragment.java
@@ -818,8 +818,7 @@
     }
 
     private boolean revert() {
-        final AccountTypeManager accountType = AccountTypeManager.getInstance(mContext);
-        if (mState.buildDiff().isEmpty()) {
+        if (mState == null || mState.buildDiff().isEmpty()) {
             doRevertAction();
         } else {
             CancelEditDialogFragment.show(this);