Add a test for NULL parameter attribute too

Just to be sure we don't have any issues with the new continuation
code.  The mutt_set_parameter() code doesn't actively prevent a null
attribute.

Co-authored-by: Richard Russon <rich@flatcap.org>

diff --git a/sendlib.c b/sendlib.c
index 549991f3276ded7394e0f157378f4ee54863d8fc..ac2dc7555850b1f8b18e84f7e85a0569304302ef 100644 (file)
--- a/sendlib.c
+++ b/sendlib.c
@@ -369,7 +369,7 @@ int mutt_write_mime_header(struct Body *a, FILE *fp)
     struct Parameter *np = NULL;
     TAILQ_FOREACH(np, &a->parameter, entries)
     {
-      if (!np->value)
+      if (!np->attribute || !np->value)
         continue;
 
       struct ParameterList param_conts = rfc2231_encode_string(np->attribute, np->value);