Minor bugfixes.

@@ -253,14 +253,14 @@ main (int argc, char **argv)
       if ((rc = mu_mailbox_get_message (input, n, &imsg)) != 0)
 	{
 	  mh_error (_("%d: cannot get message: %s"),
-		    n, mu_strerror (errno));
+		    n, mu_strerror (rc));
 	  continue;
 	}
 
       if ((rc = mu_mailbox_append_message (output, imsg)) != 0)
 	{
 	  mh_error (_("%d: error appending message: %s"),
-		    n, mu_strerror (errno));
+		    n, mu_strerror (rc));
 	  continue;
 	}
 

@@ -156,7 +156,7 @@ action_list (void *item, void *data)
 }
 
 static int
-list_private (char *name, char *value, char *data)
+list_private (char *name, char *value, void *data)
 {
   int nlen;
   
@@ -174,7 +174,7 @@ list_private (char *name, char *value, char *data)
 }
 
 static int
-list_public (char *name, char *value, char *data)
+list_public (char *name, char *value, void *data)
 {
   printf ("%s: %s\n", name, value);
   return 0;