From d560d0e4703cef7bfa0cb63e2ebb5553de0fc06f Mon Sep 17 00:00:00 2001
From: Ludovic Marcotte <lmarcotte@inverse.ca>
Date: Mon, 17 Feb 2014 11:28:06 -0500
Subject: [PATCH] Always return a response avoiding iOS crashes on no-changes

---
 ActiveSync/SOGoActiveSyncDispatcher+Sync.m | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
index 2894c5cf6..dfa0b3110 100644
--- a/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
+++ b/ActiveSync/SOGoActiveSyncDispatcher+Sync.m
@@ -998,7 +998,6 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
       if (changeDetected)
         {
           NSLog(@"Change detected, we push the content.");
-          [output appendString: s];
           break;
         }
       else
@@ -1008,6 +1007,11 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
         }
     }
 
+  // We always return the last generated response.
+  // If we only return <Sync><Collections/></Sync>,
+  // iOS powered devices will simply crash.
+  [output appendString: s];
+
   [output appendString: @"</Collections></Sync>"];
       
   d = [[output dataUsingEncoding: NSUTF8StringEncoding] xml2wbxml];