Merge branch 'am/sparse-index-name-hash-fix'

Avoid adding directory path to a sparse-index tree entries to the
name-hash, since they would bloat the hashtable without anybody
querying for them.  This was done already for a single threaded
part of the code, but now the multi-threaded code also does the
same.

* am/sparse-index-name-hash-fix:
  name-hash: don't add sparse directories in threaded lazy init

name-hash.c

@@ -492,9 +492,11 @@ static void *lazy_name_thread_proc(void *_data)
 	for (k = 0; k < d->istate->cache_nr; k++) {
 		struct cache_entry *ce_k = d->istate->cache[k];
 		ce_k->ce_flags |= CE_HASHED;
+		if (!S_ISSPARSEDIR(ce_k->ce_mode)) {
 			hashmap_entry_init(&ce_k->ent, d->lazy_entries[k].hash_name);
 			hashmap_add(&d->istate->name_hash, &ce_k->ent);
 		}
+	}
 
 	return NULL;
 }