type_to_string: support ripemd160.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

common/type_to_string.c

@@ -1,10 +1,13 @@
+#include <ccan/crypto/ripemd160/ripemd160.h>
+#include <ccan/crypto/sha256/sha256.h>
 #include <ccan/tal/str/str.h>
 #include <common/type_to_string.h>
 #include <common/utils.h>
 #include <inttypes.h>
 
-/* We need at least one, and this is in CCAN so register it here. */
+/* We need at least one, and these are in CCAN so register it here. */
 REGISTER_TYPE_TO_HEXSTR(sha256);
+REGISTER_TYPE_TO_HEXSTR(ripemd160);
 
 char *type_to_string_(const tal_t *ctx,  const char *typename,
 		      union printable_types u)

common/type_to_string.h

@@ -3,7 +3,6 @@
 #include "config.h"
 #include "utils.h"
 #include <ccan/autodata/autodata.h>
-#include <ccan/crypto/sha256/sha256.h>
 #include <secp256k1.h>
 
 /* This must match the type_to_string_ cases. */
@@ -11,6 +10,7 @@ union printable_types {
 	const struct pubkey *pubkey;
 	const struct sha256_double *sha256_double;
 	const struct sha256 *sha256;
+	const struct ripemd160 *ripemd160;
 	const struct rel_locktime *rel_locktime;
 	const struct abs_locktime *abs_locktime;
 	const struct bitcoin_tx *bitcoin_tx;