#include "tag.h"
#include "delta.h"
#include "cache.h"
-#include <string.h>
/* the delta object definition (it can alias any other object) */
struct delta {
} u;
};
-struct delta *lookup_delta(unsigned char *sha1)
+struct delta *lookup_delta(const unsigned char *sha1)
{
struct object *obj = lookup_object(sha1);
if (!obj) {