[shotwell] flickr: Fix login

[Jens Georg <jensgeorg src gnome org>]

commit 8675834689ed703ebaf10c16fa84bc012b7cf42e
Author: Jens Georg <mail jensge org>
Date:   Fri May 22 18:25:02 2020 +0200

    flickr: Fix login

 plugins/authenticator/shotwell/FlickrPublishingAuthenticator.vala | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/plugins/authenticator/shotwell/FlickrPublishingAuthenticator.vala 
b/plugins/authenticator/shotwell/FlickrPublishingAuthenticator.vala
index 82448e26..17c711a8 100644
--- a/plugins/authenticator/shotwell/FlickrPublishingAuthenticator.vala
+++ b/plugins/authenticator/shotwell/FlickrPublishingAuthenticator.vala
@@ -21,7 +21,7 @@ namespace Publishing.Authenticator.Shotwell.Flickr {
         public AuthenticationRequestTransaction(Publishing.RESTSupport.OAuth1.Session session) {
             base.with_uri(session, "https://www.flickr.com/services/oauth/request_token";,
                     Publishing.RESTSupport.HttpMethod.GET);
-            add_argument("oauth_callback", "shotwell-auth%3A%2F%2Flocal-callback");
+            add_argument("oauth_callback", "shotwell-auth://local-callback");
         }
     }
 
@@ -31,7 +31,7 @@ namespace Publishing.Authenticator.Shotwell.Flickr {
                     Publishing.RESTSupport.HttpMethod.GET);
             add_argument("oauth_verifier", user_verifier);
             add_argument("oauth_token", session.get_request_phase_token());
-            add_argument("oauth_callback", "shotwell-auth%3A%2F%2Flocal-callback");
+            add_argument("oauth_callback", "shotwell-auth://local-callback");
         }
     }