The dependency on openssl was dropped six years ago in commit
f0884471. This commit corrects the stale comment that still says we
use openssl's sha1 implementation.
#define HASH_TYPE unsigned char
#include "sha1.h"
#define HASH_TYPE unsigned char
#include "sha1.h"
-/** We use openssl's sha1 implementation. */
+/** Our own sha1 implementation, see sha1.c. */
#define hash_function sha1_hash
/**
#define hash_function sha1_hash
/**