go.mod, go.sum: bump wireguard-go

go.mod

@@ -24,7 +24,7 @@ require (
 	github.com/peterbourgon/ff/v2 v2.0.0
 	github.com/tailscale/depaware v0.0.0-20200914232109-e09ee10c1824
 	github.com/tailscale/winipcfg-go v0.0.0-20200916205758-decb9ee8e170
-	github.com/tailscale/wireguard-go v0.0.0-20200902185615-1997cf6f9fe4
+	github.com/tailscale/wireguard-go v0.0.0-20200921221757-11a958a67bdd
 	github.com/tcnksm/go-httpstat v0.2.0
 	github.com/toqueteos/webbrowser v1.2.0
 	go4.org/mem v0.0.0-20200706164138-185c595c3ecc

go.sum

@@ -105,6 +105,7 @@ github.com/tailscale/winipcfg-go v0.0.0-20200916205758-decb9ee8e170 h1:vJ0twi012
 github.com/tailscale/winipcfg-go v0.0.0-20200916205758-decb9ee8e170/go.mod h1:x880GWw5fvrl2DVTQ04ttXQD4DuppTt1Yz6wLibbjNE=
 github.com/tailscale/wireguard-go v0.0.0-20200902185615-1997cf6f9fe4 h1:UiTXdZChEWxxci7bx+jS9OyHQx2IA8zmMWQqp5wfP7c=
 github.com/tailscale/wireguard-go v0.0.0-20200902185615-1997cf6f9fe4/go.mod h1:WXq+IkSOJGIgfF1XW+4z4oW+LX/TXzU9DcKlT5EZLi4=
+github.com/tailscale/wireguard-go v0.0.0-20200921221757-11a958a67bdd/go.mod h1:WXq+IkSOJGIgfF1XW+4z4oW+LX/TXzU9DcKlT5EZLi4=
 github.com/tcnksm/go-httpstat v0.2.0 h1:rP7T5e5U2HfmOBmZzGgGZjBQ5/GluWUylujl0tJ04I0=
 github.com/tcnksm/go-httpstat v0.2.0/go.mod h1:s3JVJFtQxtBEBC9dwcdTTXS9xFnM3SXAZwPG41aurT8=
 github.com/toqueteos/webbrowser v1.2.0 h1:tVP/gpK69Fx+qMJKsLE7TD8LuGWPnEV71wBN9rrstGQ=