M masto.go → masto.go

@@ -79,6 +79,7 @@ return
 	}
 
 	log.Println("redirecting to", redirectURI+"?code="+nrw.auth)
+	rw.Header().Set("Content-Type", "")
 	http.Redirect(rw, r, redirectURI+"?code="+nrw.auth, 302)
 }