add client refs for the nocomp client

this client may be referenced after deletion during render loop

fix T6151

src/bin/e_client.c

@@ -4385,7 +4385,11 @@ e_client_fullscreen(E_Client *ec, E_Fullscreen policy)
    ec->need_fullscreen = 1;
    if (ec->new_client) return;
    if (e_comp->nocomp_ec && (ec->desk == e_comp->nocomp_ec->desk))
-     e_comp->nocomp_ec = ec;
+     {
+        e_object_unref(E_OBJECT(e_comp->nocomp_ec));
+        e_object_ref(E_OBJECT(ec));
+        e_comp->nocomp_ec = ec;
+     }
    ec->desk->fullscreen_clients = eina_list_append(ec->desk->fullscreen_clients, ec);
    ec->pre_res_change.valid = 0;
 

src/bin/e_comp.c

@@ -221,6 +221,7 @@ _e_comp_cb_nocomp_begin(void)
 
    ecf = _e_comp_fullscreen_check();
    if (!ecf) return;
+   e_object_ref(E_OBJECT(ecf));
    e_comp->nocomp_ec = ecf;
    E_CLIENT_FOREACH(ec)
      if (ec != ecf) e_client_redirected_set(ec, 0);
@@ -357,7 +358,7 @@ _e_comp_nocomp_end(void)
         evas_object_layer_set(e_comp->nocomp_ec->frame, layer);
         e_comp->nocomp_ec->fullscreen = fs;
      }
-   e_comp->nocomp_ec = NULL;
+   E_FREE_FUNC(e_comp->nocomp_ec, e_object_unref);
 }
 
 static Eina_Bool