Merge branch 'jn/maint-fast-import-object-reuse' into maint

* jn/maint-fast-import-object-reuse:
  fast-import: insert new object entries at start of hash bucket

Author: gitster

fast-import.c

@@ -539,22 +539,17 @@ static struct object_entry *insert_object(unsigned char *sha1)
 {
 	unsigned int h = sha1[0] << 8 | sha1[1];
 	struct object_entry *e = object_table[h];
-	struct object_entry *p = NULL;
 
 	while (e) {
 		if (!hashcmp(sha1, e->idx.sha1))
 			return e;
-		p = e;
 		e = e->next;
 	}
 
 	e = new_object(sha1);
-	e->next = NULL;
+	e->next = object_table[h];
 	e->idx.offset = 0;
-	if (p)
-		p->next = e;
-	else
-		object_table[h] = e;
+	object_table[h] = e;
 	return e;
 }