[evolution-data-server] Fix a compiler warning.

[Matthew Barnes <mbarnes src gnome org>]

commit 4eb1719ccd50367c17ae8ce8a731aabb2e47a979
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue Sep 28 14:42:54 2010 -0400

    Fix a compiler warning.

 camel/camel-gpg-context.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/camel/camel-gpg-context.c b/camel/camel-gpg-context.c
index f027917..f176c3f 100644
--- a/camel/camel-gpg-context.c
+++ b/camel/camel-gpg-context.c
@@ -2008,8 +2008,10 @@ gpg_decrypt_sync (CamelCipherContext *context,
 
 	istream = camel_stream_mem_new ();
 	if (!camel_data_wrapper_decode_to_stream_sync (
-		content, istream, cancellable, error))
-		goto fail;
+		content, istream, cancellable, error)) {
+		g_object_unref (istream);
+		return NULL;
+	}
 	camel_stream_reset (istream, NULL);
 
 	ostream = camel_stream_mem_new ();