libubus: fix a small memleak in ubus_register_event_handler()

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/libubus.c b/libubus.c
index be4e6acdd797480225631b45d70e27909bbe0bcb..e42f14f9cdf026a3dea36beeb45d60557cb717b9 100644 (file)
--- a/libubus.c
+++ b/libubus.c
@@ -243,8 +243,11 @@ int ubus_register_event_handler(struct ubus_context *ctx,
        if (pattern)
                blobmsg_add_string(&b2, "pattern", pattern);
 
-       return ubus_invoke(ctx, UBUS_SYSTEM_OBJECT_EVENT, "register", b2.head,
+       ret = ubus_invoke(ctx, UBUS_SYSTEM_OBJECT_EVENT, "register", b2.head,
                          NULL, NULL, 0);
+       blob_buf_free(&b2);
+
+       return ret;
 }
 
 int ubus_send_event(struct ubus_context *ctx, const char *id,