lightningd/plugin: free timers struct after use.

It's actually a local variable, so make it one.

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

lightningd/plugin.c

@@ -77,7 +77,6 @@ struct plugins {
 	struct log *log;
 	struct log_book *log_book;
 
-	struct timers timers;
 	struct lightningd *ld;
 };
 
@@ -107,7 +106,6 @@ struct plugins *plugins_new(const tal_t *ctx, struct log_book *log_book,
 	list_head_init(&p->plugins);
 	p->log_book = log_book;
 	p->log = new_log(p, log_book, "plugin-manager");
-	timers_init(&p->timers, time_mono());
 	p->ld = ld;
 	return p;
 }
@@ -965,8 +963,11 @@ void plugins_init(struct plugins *plugins, const char *dev_plugin_debug)
 	int stdin, stdout;
 	struct timer *expired;
 	struct jsonrpc_request *req;
+	struct timers timers;
+
 	plugins->pending_manifests = 0;
 	uintmap_init(&plugins->pending_requests);
+	timers_init(&timers, time_mono());
 
 	plugins_add_default_dir(plugins, path_join(tmpctx, plugins->ld->config_dir, "plugins"));
 
@@ -1003,19 +1004,20 @@ void plugins_init(struct plugins *plugins, const char *dev_plugin_debug)
 			p->timeout_timer = NULL;
 		else {
 			p->timeout_timer
-				= new_reltimer(&plugins->timers, p,
+				= new_reltimer(&timers, p,
 					       time_from_sec(PLUGIN_MANIFEST_TIMEOUT),
 					       plugin_manifest_timeout, p);
 		}
 		tal_free(cmd);
 	}
 	while (plugins->pending_manifests > 0) {
-		void *v = io_loop(&plugins->timers, &expired);
+		void *v = io_loop(&timers, &expired);
 		if (v == plugins)
 			break;
 		if (expired)
 			timer_expired(plugins, expired);
 	}
+	timers_cleanup(&timers);
 }
 
 static void plugin_config_cb(const char *buffer,