Minor fixes.

* examples/argcv.c (main): Use fgest instead of getline.
* mail/decode.c (mime_descend): Use util_get_hdr_value
which does not cut off the additional arguments after
the ';'.

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 2005, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2009 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -32,10 +32,10 @@ main(int argc, char **argv)
 {
   char *delim = "";
   char *comment = "#";
-  char *buf = NULL;
+  char buf[512];
   size_t n = 0;
   
-  while (getline (&buf, &n, stdin) > 0)
+  while (fgets (buf, sizeof buf, stdin))
     {
       int status, c;
       char **v;
@@ -57,6 +57,5 @@ main(int argc, char **argv)
 	}
       mu_argcv_free (c, v);
     } 
-  free (buf);
   exit (0);
 }

@@ -173,7 +173,9 @@ mime_descend (struct mime_descend_closure *closure,
   struct mime_descend_closure subclosure;
 
   mu_message_get_header (closure->message, &hdr);
-  util_get_content_type (hdr, &type, NULL);
+  util_get_hdr_value (hdr, MU_HEADER_CONTENT_TYPE, &type);
+  if (type == NULL)
+    type = xstrdup ("text/plain");
   get_content_encoding (hdr, &encoding);
 
   closure->type = type;