internal: add Patreon to the broken auth list

Change-Id: I764ff2923f3c8a87f91893b47827068f093c4437
Reviewed-on: https://go-review.googlesource.com/20232
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/internal/token.go b/internal/token.go
index 9006448..739a89b 100644
--- a/internal/token.go
+++ b/internal/token.go
@@ -115,6 +115,7 @@
 	"https://www.linkedin.com/",
 	"https://www.strava.com/oauth/",
 	"https://www.wunderlist.com/oauth/",
+	"https://api.patreon.com/",
 }
 
 func RegisterBrokenAuthHeaderProvider(tokenURL string) {