[libgda] Fixing wrong pointer cast

[Pavlo Solntsev <psolntsev src gnome org>]

commit fac75767fce88b4d7c831ab1a396c7546b4d69a0
Author: Pavlo Solntsev <p sun fun gmail com>
Date:   Tue Jun 2 00:45:35 2020 -0500

    Fixing wrong pointer cast
    
    This issue could be related to !194
    The underlying GSlist contains gchar* elements but it is cast to GdaMetaStoreChange*.

 tests/meta-store/common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/meta-store/common.c b/tests/meta-store/common.c
index 0d0812f57..29d0b96d1 100644
--- a/tests/meta-store/common.c
+++ b/tests/meta-store/common.c
@@ -220,7 +220,7 @@ common_declare_expected_change (const gchar *table_name, GdaMetaStoreChangeType
                /* clear any remaining changes not handled */
                if (expected_changes) {
                        /* expected more changes */
-                       gchar *estr = stringify_a_change ((GdaMetaStoreChange *) expected_changes->data);
+                       gchar *estr = (gchar *) expected_changes->data;
                        g_print ("Received no change but EXPECTED GdaMetaStoreChange: %s", estr);
                        exit (EXIT_FAILURE);
                }