From dd5d8561cdf3365a5d4149b5abf6904db7c50b65 Mon Sep 17 00:00:00 2001
From: m0viefreak <m0viefreak.cm@googlemail.com>
Date: Fri, 15 Feb 2013 09:41:27 +0100
Subject: [PATCH] message view / list: fix NPE when list is empty

This happened for example in a starred-message-only view when
un-starting the last message. This led to isFirst() and isLast()
causing a NullPointerException when trying to update the
previous / next buttons.
---
 src/com/fsck/k9/fragment/MessageListFragment.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/com/fsck/k9/fragment/MessageListFragment.java b/src/com/fsck/k9/fragment/MessageListFragment.java
index c48ec2a23..a14c11b18 100644
--- a/src/com/fsck/k9/fragment/MessageListFragment.java
+++ b/src/com/fsck/k9/fragment/MessageListFragment.java
@@ -2873,11 +2873,11 @@ public class MessageListFragment extends SherlockFragment implements OnItemClick
     }
 
     public boolean isFirst(MessageReference messageReference) {
-        return messageReference.equals(getReferenceForPosition(0));
+        return mAdapter.isEmpty() || messageReference.equals(getReferenceForPosition(0));
     }
 
     public boolean isLast(MessageReference messageReference) {
-        return messageReference.equals(getReferenceForPosition(mAdapter.getCount() - 1));
+        return mAdapter.isEmpty() || messageReference.equals(getReferenceForPosition(mAdapter.getCount() - 1));
     }
 
     private MessageReference getReferenceForPosition(int position) {