From 59399506dfdddb01996a07165218634c00e12993 Mon Sep 17 00:00:00 2001
From: Marcus Wolschon <Marcus@Wolschon.biz>
Date: Tue, 19 Apr 2011 09:01:01 +0200
Subject: [PATCH] fixed very rare NullPointerException

---
 src/com/fsck/k9/provider/AttachmentProvider.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/com/fsck/k9/provider/AttachmentProvider.java b/src/com/fsck/k9/provider/AttachmentProvider.java
index 126223d72..8b234113b 100644
--- a/src/com/fsck/k9/provider/AttachmentProvider.java
+++ b/src/com/fsck/k9/provider/AttachmentProvider.java
@@ -72,7 +72,14 @@ public class AttachmentProvider extends ContentProvider {
          * We use the cache dir as a temporary directory (since Android doesn't give us one) so
          * on startup we'll clean up any .tmp files from the last run.
          */
-        File[] files = getContext().getCacheDir().listFiles();
+        final File cacheDir = getContext().getCacheDir();
+        if (cacheDir == null) {
+        	return true;
+        }
+		File[] files = cacheDir.listFiles();
+		if (files == null) {
+			return true;
+		}
         for (File file : files) {
             if (file.getName().endsWith(".tmp")) {
                 file.delete();