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3726dd2)
ptable_fetch already returns NULL for nonexistent entries, so NULL can't
possibly have any other meaning than "this node is not currently in use".
do {
ptable_ent *entry;
for (entry = array[i]; entry; entry = entry->next)
do {
ptable_ent *entry;
for (entry = array[i]; entry; entry = entry->next)
- cb(aTHX_ entry, userdata);
+ if (entry->val)
+ cb(aTHX_ entry, userdata);