[gmime] Fixed GMimePart's encode() method to only pick the best encoding for the content

[Jeffrey Stedfast <fejj src gnome org>]

commit 751352feada19247fb51923329b7fa7e5e57157a
Author: Jeffrey Stedfast <jestedfa microsoft com>
Date:   Fri Mar 17 20:03:23 2017 -0400

    Fixed GMimePart's encode() method to only pick the best encoding for the content

 gmime/gmime-part.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gmime/gmime-part.c b/gmime/gmime-part.c
index 211ea27..dfbaa9f 100644
--- a/gmime/gmime-part.c
+++ b/gmime/gmime-part.c
@@ -442,7 +442,7 @@ mime_part_encode (GMimeObject *object, GMimeEncodingConstraint constraint)
        g_mime_stream_filter_add ((GMimeStreamFilter *) stream, filter);
        g_object_unref (null);
        
-       g_mime_object_write_to_stream (object, stream);
+       g_mime_data_wrapper_write_to_stream (part->content, stream);
        g_object_unref (stream);
        
        encoding = g_mime_filter_best_encoding ((GMimeFilterBest *) filter, constraint);