[balsa/gtk3] Check for empty return from GpgME

[Peter Bloomfield <PeterB src gnome org>]

commit 971d850aebe4ff76948d65ffd7fce7aebb5ef6c8
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Wed Feb 8 22:15:52 2012 -0500

    Check for empty return from GpgME
    
    	* libbalsa/gmime-part-rfc2440.c (g_mime_part_rfc2440_verify):
    	check for empty return from GpgME.

 ChangeLog                     |    5 +++++
 libbalsa/gmime-part-rfc2440.c |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index a2d0108..3ff28e9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-08  Albrecht DreÃ
+
+	* libbalsa/gmime-part-rfc2440.c (g_mime_part_rfc2440_verify):
+	check for empty return from GpgME.
+
 2012-02-03  Peter Bloomfield
 
 	* configure.in: remove obsolete BUILD_WITH_GNOME.
diff --git a/libbalsa/gmime-part-rfc2440.c b/libbalsa/gmime-part-rfc2440.c
index 4c032c6..e5b927a 100644
--- a/libbalsa/gmime-part-rfc2440.c
+++ b/libbalsa/gmime-part-rfc2440.c
@@ -259,7 +259,7 @@ g_mime_part_rfc2440_verify(GMimePart * part, GError ** err)
 			      TRUE, err);
 
     /* upon success, replace the signed content by the checked one */
-    if (result) {
+    if (result && g_mime_stream_length(plainstream) > 0) {
 	GMimeDataWrapper *wrapper = g_mime_data_wrapper_new();
 
 	g_mime_data_wrapper_set_stream(wrapper, plainstream);