Merge "Add internal state for prevent bug from async api call" into tizen

diff --cc client/vc_mgr_client.c
index 328ff33,e44644e..234d0d9
--- 1/client/vc_mgr_client.c
--- 2/client/vc_mgr_client.c
+++ b/client/vc_mgr_client.c
@@@ -1092,4 -1116,4 +1122,4 @@@ int vc_mgr_client_get_start_by_client(v
        *option = client->start_by_client;
  
        return 0;
--}
++}