gossipd: fix false-positive memleak detection in pending_node_map.

lightning_gossipd(17421): MEMLEAK: 0x564b4b17b5a8
    ligtning_gossipd(17421):   label=gossipd/routing.c:1490:struct pending_node_announce
    lightning_gossipd(17421):   backtrace:
    lightning_gossipd(17421):     ccan/ccan/tal/tal.c:437 (tal_alloc_)
    lightning_gossipd(17421):     gossipd/routing.c:1490 (catch_node_announcement)
    lightning_gossipd(17421):     gossipd/routing.c:1837 (handle_channel_announcement)
    lightning_gossipd(17421):     gossipd/gossipd.c:238 (handle_channel_announcement_msg)
    lightning_gossipd(17421):     gossipd/gossipd.c:461 (peer_msg_in)
    lightning_gossipd(17421):     common/daemon_conn.c:31 (handle_read)
    lightning_gossipd(17421):     ccan/ccan/io/io.c:59 (next_plan)
    lightning_gossipd(17421):     ccan/ccan/io/io.c:407 (do_plan)
    lightning_gossipd(17421):     ccan/ccan/io/io.c:417 (io_ready)
    lightning_gossipd(17421):     ccan/ccan/io/poll.c:445 (io_loop)
    lightning_gossipd(17421):     gossipd/gossipd.c:1700 (main)
    lightning_gossipd(17421):   parents:
    lightning_gossipd(17421):     gossipd/routing.c:294:struct routing_state

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

gossipd/routing.c

@@ -1528,7 +1528,7 @@ static void process_pending_node_announcement(struct routing_state *rstate,
 	 * accepted the public channel now.  But other pending announcements
 	 * may still hold a reference they use in
 	 * del_pending_node_announcement, so simply delete it from the map. */
-	pending_node_map_del(rstate->pending_node_map, pna);
+	pending_node_map_del(rstate->pending_node_map, notleak(pna));
 }
 
 static struct pending_cannouncement *

gossipd/test/run-bench-find_route.c

@@ -51,6 +51,9 @@ bool nannounce_different(struct gossip_store *gs UNNEEDED,
 			 const struct node *node UNNEEDED,
 			 const u8 *nannounce UNNEEDED)
 { fprintf(stderr, "nannounce_different called!\n"); abort(); }
+/* Generated stub for notleak_ */
+void *notleak_(const void *ptr UNNEEDED, bool plus_children UNNEEDED)
+{ fprintf(stderr, "notleak_ called!\n"); abort(); }
 /* Generated stub for onion_type_name */
 const char *onion_type_name(int e UNNEEDED)
 { fprintf(stderr, "onion_type_name called!\n"); abort(); }

gossipd/test/run-find_route-specific.c

@@ -40,6 +40,9 @@ bool nannounce_different(struct gossip_store *gs UNNEEDED,
 			 const struct node *node UNNEEDED,
 			 const u8 *nannounce UNNEEDED)
 { fprintf(stderr, "nannounce_different called!\n"); abort(); }
+/* Generated stub for notleak_ */
+void *notleak_(const void *ptr UNNEEDED, bool plus_children UNNEEDED)
+{ fprintf(stderr, "notleak_ called!\n"); abort(); }
 /* Generated stub for onion_type_name */
 const char *onion_type_name(int e UNNEEDED)
 { fprintf(stderr, "onion_type_name called!\n"); abort(); }

gossipd/test/run-find_route.c

@@ -38,6 +38,9 @@ bool nannounce_different(struct gossip_store *gs UNNEEDED,
 			 const struct node *node UNNEEDED,
 			 const u8 *nannounce UNNEEDED)
 { fprintf(stderr, "nannounce_different called!\n"); abort(); }
+/* Generated stub for notleak_ */
+void *notleak_(const void *ptr UNNEEDED, bool plus_children UNNEEDED)
+{ fprintf(stderr, "notleak_ called!\n"); abort(); }
 /* Generated stub for onion_type_name */
 const char *onion_type_name(int e UNNEEDED)
 { fprintf(stderr, "onion_type_name called!\n"); abort(); }

gossipd/test/run-overlong.c

@@ -38,6 +38,9 @@ bool nannounce_different(struct gossip_store *gs UNNEEDED,
 			 const struct node *node UNNEEDED,
 			 const u8 *nannounce UNNEEDED)
 { fprintf(stderr, "nannounce_different called!\n"); abort(); }
+/* Generated stub for notleak_ */
+void *notleak_(const void *ptr UNNEEDED, bool plus_children UNNEEDED)
+{ fprintf(stderr, "notleak_ called!\n"); abort(); }
 /* Generated stub for onion_type_name */
 const char *onion_type_name(int e UNNEEDED)
 { fprintf(stderr, "onion_type_name called!\n"); abort(); }

gossipd/test/run-txout_failure.c

@@ -50,6 +50,9 @@ bool nannounce_different(struct gossip_store *gs UNNEEDED,
 			 const struct node *node UNNEEDED,
 			 const u8 *nannounce UNNEEDED)
 { fprintf(stderr, "nannounce_different called!\n"); abort(); }
+/* Generated stub for notleak_ */
+void *notleak_(const void *ptr UNNEEDED, bool plus_children UNNEEDED)
+{ fprintf(stderr, "notleak_ called!\n"); abort(); }
 /* Generated stub for onion_type_name */
 const char *onion_type_name(int e UNNEEDED)
 { fprintf(stderr, "onion_type_name called!\n"); abort(); }