gossipd: fix cut & paste in error messages.

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

gossipd/routing.c

@@ -1422,7 +1422,7 @@ static u8 *check_channel_announcement(const tal_t *ctx,
 	if (!check_signed_hash_nodeid(&hash, node1_sig, node1_id)) {
 		return towire_errorfmt(ctx, NULL,
 				       "Bad node_signature_1 %s hash %s"
-				       " on node_announcement %s",
+				       " on channel_announcement %s",
 				       type_to_string(ctx,
 						      secp256k1_ecdsa_signature,
 						      node1_sig),
@@ -1434,7 +1434,7 @@ static u8 *check_channel_announcement(const tal_t *ctx,
 	if (!check_signed_hash_nodeid(&hash, node2_sig, node2_id)) {
 		return towire_errorfmt(ctx, NULL,
 				       "Bad node_signature_2 %s hash %s"
-				       " on node_announcement %s",
+				       " on channel_announcement %s",
 				       type_to_string(ctx,
 						      secp256k1_ecdsa_signature,
 						      node2_sig),
@@ -1446,7 +1446,7 @@ static u8 *check_channel_announcement(const tal_t *ctx,
 	if (!check_signed_hash(&hash, bitcoin1_sig, bitcoin1_key)) {
 		return towire_errorfmt(ctx, NULL,
 				       "Bad bitcoin_signature_1 %s hash %s"
-				       " on node_announcement %s",
+				       " on channel_announcement %s",
 				       type_to_string(ctx,
 						      secp256k1_ecdsa_signature,
 						      bitcoin1_sig),
@@ -1458,7 +1458,7 @@ static u8 *check_channel_announcement(const tal_t *ctx,
 	if (!check_signed_hash(&hash, bitcoin2_sig, bitcoin2_key)) {
 		return towire_errorfmt(ctx, NULL,
 				       "Bad bitcoin_signature_2 %s hash %s"
-				       " on node_announcement %s",
+				       " on channel_announcement %s",
 				       type_to_string(ctx,
 						      secp256k1_ecdsa_signature,
 						      bitcoin2_sig),