compat: Add simplified merge sort implementation from glibc

diff --git a/cache.h b/cache.h
index 24735bdfeeca1ca1b8fc9579ce029d1faeb978e3..549f4bbac7242714283e58dd576460ca86015d52 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -561,6 +561,7 @@ extern struct packed_git *find_sha1_pack(const unsigned char *sha1,
 extern void pack_report(void);
 extern int open_pack_index(struct packed_git *);
 extern unsigned char* use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *);
+extern void close_pack_windows(struct packed_git *);
 extern void unuse_pack(struct pack_window **);
 extern struct packed_git *add_packed_git(const char *, int, int);
 extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t);