From 1b54134f855450979f34a01e5a5c9c0234156b60 Mon Sep 17 00:00:00 2001
From: mguessan <mguessan@3d1905a2-6b24-0410-a738-b14d5a86fcbd>
Date: Thu, 17 Dec 2009 23:02:59 +0000
Subject: [PATCH] Caldav: fix NullPointerException in notifications

git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@885 3d1905a2-6b24-0410-a738-b14d5a86fcbd
---
 src/java/davmail/exchange/ExchangeSession.java | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/java/davmail/exchange/ExchangeSession.java b/src/java/davmail/exchange/ExchangeSession.java
index 44e80f9d..e0f0198b 100644
--- a/src/java/davmail/exchange/ExchangeSession.java
+++ b/src/java/davmail/exchange/ExchangeSession.java
@@ -2321,11 +2321,12 @@ public class ExchangeSession {
                 // Make sure invites have a proper subject line
                 writer.write("Subject: " + MimeUtility.encodeText(getICSSummary(icsBody), "UTF-8", null) + "\r\n");
 
-                writer.write("To: ");
-                writer.write(recipients);
-                writer.write("\r\n");
                 // do not send notification if no recipients found
-                if (recipients.length() == 0) {
+                if (recipients != null && recipients.length() > 0) {
+                    writer.write("To: ");
+                    writer.write(recipients);
+                    writer.write("\r\n");
+                } else {
                     status = HttpStatus.SC_NO_CONTENT;
                 }
             } else {