[AT-SPI] Prevent crashing Say method when s-r is turned off
[AT-SPI] Prevent crashing Say method when s-r is turned off

Change-Id: Iae4c20a1b8231b058c4db7f93aef0312e3bfa28d

dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor