[evolution-groupwise] Bug #673424 - Crash on displaying attachment

[Vibha Yadav <yvibha src gnome org>]

commit a1bad598b8babaf37e8f7b5f2c07c8346625a4c9
Author: Vibha Yadav <yvibha suse com>
Date:   Wed Apr 4 14:47:43 2012 +0530

    Bug #673424 - Crash on displaying attachment
    
    Consider the default MIME type to be "multipart/mixed".

 src/camel/camel-groupwise-folder.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/camel/camel-groupwise-folder.c b/src/camel/camel-groupwise-folder.c
index 407e3a4..8af7752 100644
--- a/src/camel/camel-groupwise-folder.c
+++ b/src/camel/camel-groupwise-folder.c
@@ -2286,8 +2286,11 @@ groupwise_folder_item_to_msg (CamelFolder *folder,
 					} else {
 							camel_mime_part_set_content(part, attachment, len, "text/plain");
 					}
+					/*According to rfc2046#section-5.1.3
+					 * Any "multipart" subtypes that an implementation does not recognize
+					 * must be treated as being of subtype "mixed"*/
 					if (!has_boundary)
-						camel_data_wrapper_set_mime_type(CAMEL_DATA_WRAPPER (multipart),"multipart/digest");
+						camel_data_wrapper_set_mime_type(CAMEL_DATA_WRAPPER (multipart),"multipart/mixed");
 
 					camel_multipart_set_boundary (multipart, NULL);
 					camel_multipart_add_part (multipart, part);