Fix missing displays on sesman restart

libipm/ercp.c

@@ -208,10 +208,7 @@ ercp_get_session_announce_event(struct trans *trans,
 
     if (rv == 0)
     {
-        if (display != NULL)
-        {
-            *display = i_display;
-        }
+        *display = i_display;
         *uid = (uid_t)i_uid;
         *type = (enum scp_session_type)i_type;
         *start_width = i_width;

libipm/ercp.h

@@ -188,7 +188,6 @@ ercp_send_session_announce_event(struct trans *trans,
  *
  * @param trans EICP transport
  * @param[out] display Display used by session.
- *             Pointer can be NULL if this is already known.
  * @param[out] uid UID of user logged in to session
  * @param[out] type Session type
  * @param[out] start_width Starting width of seenio