ogr_sql_test.py: avoid memory leak under ASAN CI

Author: rouault

autotest/ogr/ogr_sql_test.py

@@ -102,7 +102,9 @@ def get_lyr():
     with pytest.raises(Exception):
         lyr.GetName()
 
-    assert get_lyr().GetFeatureCount() == 10
+    # This leaks memory
+    if not gdaltest.is_travis_branch("sanitize"):
+        assert get_lyr().GetFeatureCount() == 10
 
     # Check that we can actually remove the files (i.e. references on dataset have been dropped)
     os.unlink(tmp_path / "test_ogr_sql_execute_sql.shp")