[libgda] Test: Adopting test to use new API

[Pavlo Solntsev <psolntsev src gnome org>]

commit 8a50cffb62d98df505b2aeb4e3364f78797841f7
Author: Pavlo Solntsev <p sun fun gmail com>
Date:   Thu Jun 4 15:33:50 2020 -0500

    Test: Adopting test to use new API

 tests/test-server-operation-postgresql.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/tests/test-server-operation-postgresql.c b/tests/test-server-operation-postgresql.c
index c6975929c..fec749230 100644
--- a/tests/test-server-operation-postgresql.c
+++ b/tests/test-server-operation-postgresql.c
@@ -1280,6 +1280,8 @@ test_server_operation_operations_db (TestObjectFixture *fixture,
   g_object_unref (fcol);
   g_object_unref (field);
 
+  g_object_set (index, "table", new_table, NULL);
+
   res = gda_ddl_modifiable_create (GDA_DDL_MODIFIABLE (index), fixture->cnc, new_table, NULL);
 
   if (!res)