Delete entries from umbracoUserLogin before deleting the user (fix fo…

…r 10269)

src/Umbraco.Core/Persistence/Repositories/Implement/UserRepository.cs

@@ -427,6 +427,7 @@ protected override IEnumerable<string> GetDeleteClauses()
         {
             var list = new List<string>
             {
+                "DELETE FROM umbracoUserLogin WHERE userId = @id",
                 "DELETE FROM umbracoUser2UserGroup WHERE userId = @id",
                 "DELETE FROM umbracoUser2NodeNotify WHERE userId = @id",
                 "DELETE FROM umbracoUserStartNode WHERE userId = @id",