readconfig: Don't display "(null)" labels when hitting TAB

It is entirely legitimate for a menu entry to have a NULL label or
displayname. Since these entries are not used for execution, skip
displaying them in print_labels() when hitting the TAB key.

Reported-by: Bernd Blaauw <bblaauw@home.nl>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

diff --git a/com32/elflink/ldlinux/readconfig.c b/com32/elflink/ldlinux/readconfig.c
index 036a1df..9d50c2f 100644 (file)
--- a/com32/elflink/ldlinux/readconfig.c
+++ b/com32/elflink/ldlinux/readconfig.c
@@ -473,6 +473,9 @@ void print_labels(const char *prefix, size_t len)
 
     printf("\n");
     for (me = all_entries; me; me = me->next ) {
+       if (!me->label)
+           continue;
+
        if (!strncmp(prefix, me->label, len))
            printf(" %s", me->label);
     }