http://dev.mutt.org/trac/changeset/5904%3Af40de578e8ed

Unbreak header weeding for message/rfc822 parts. Closes #3265.

Index: handler.c
===================================================================
--- handler.c (revision 5882:536771b4e085)
+++ handler.c (revision 5904:f40de578e8ed)
@@ -1091,5 +1091,5 @@
 	(((s->flags & M_WEED) || ((s->flags & (M_DISPLAY|M_PRINTING)) && option (OPTWEED))) ? (CH_WEED | CH_REORDER) : 0) |
 	(s->prefix ? CH_PREFIX : 0) | CH_DECODE | CH_FROM |
-	(s->flags & M_DISPLAY) ? CH_DISPLAY : 0, s->prefix);
+	((s->flags & M_DISPLAY) ? CH_DISPLAY : 0), s->prefix);
 
     if (s->prefix)