auth: db-oauth2 - Improve "Internal error" message for grant lookups

diff --git a/src/auth/db-oauth2.c b/src/auth/db-oauth2.c
index 9d89deee4ea448cced68f75c8204edc2417c9b0b..f781437038a4536f3a7c02a4b4ab9d90d980d52f 100644 (file)
--- a/src/auth/db-oauth2.c
+++ b/src/auth/db-oauth2.c
@@ -754,7 +754,7 @@ db_oauth2_lookup_passwd_grant(struct oauth2_request_result *result,
                        passdb_result = PASSDB_RESULT_PASSWORD_MISMATCH;
                }
                if (error == NULL)
-                       error = "Internal error";
+                       error = "OAuth2 server returned failure without error field";
        }
        db_oauth2_callback(req, passdb_result, error);
 }