Merge branch 'ds/multi-pack-index'

The multi-pack-index left mmapped file descriptors open when it
does not have to.

* ds/multi-pack-index:
  multi-pack-index: close file descriptor after mmap

midx.c

@@ -72,9 +72,9 @@ struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local
 	FREE_AND_NULL(midx_name);
 
 	midx_map = xmmap(NULL, midx_size, PROT_READ, MAP_PRIVATE, fd, 0);
+	close(fd);
 
 	FLEX_ALLOC_STR(m, object_dir, object_dir);
-	m->fd = fd;
 	m->data = midx_map;
 	m->data_len = midx_size;
 	m->local = local;
@@ -190,8 +190,6 @@ void close_midx(struct multi_pack_index *m)
 		return;
 
 	munmap((unsigned char *)m->data, m->data_len);
-	close(m->fd);
-	m->fd = -1;
 
 	for (i = 0; i < m->num_packs; i++) {
 		if (m->packs[i])

midx.h

@@ -12,8 +12,6 @@ struct repository;
 struct multi_pack_index {
 	struct multi_pack_index *next;
 
-	int fd;
-
 	const unsigned char *data;
 	size_t data_len;