e_comp_wl : add validation check for an ec, comp_data and some member variables of it

Change-Id: I23ac20b7e1bd5c0c640509851c9ebbf1c723ef70
Signed-off-by: Sung-Jin Park <sj76.park@samsung.com>

diff --git a/src/bin/e_comp_wl.c b/src/bin/e_comp_wl.c
index 79c52c64ef4a8e309cf5c78652c2a119d3965d93..45e9c7ec6f958476b885c5cec94f9e7ff4cde7dc 100644 (file)
--- a/src/bin/e_comp_wl.c
+++ b/src/bin/e_comp_wl.c
@@ -1894,6 +1894,7 @@ _e_comp_wl_buffer_cb_destroy(struct wl_listener *listener, void *data EINA_UNUSE
 static void
 _e_comp_wl_client_evas_init(E_Client *ec)
 {
+   if (!ec || !ec->comp_data) return;
    if (ec->comp_data->evas_init) return;
 
    evas_object_event_callback_add(ec->frame, EVAS_CALLBACK_SHOW,        _e_comp_wl_evas_cb_show,        ec);
@@ -2759,11 +2760,17 @@ _e_comp_wl_frame_cb_destroy(struct wl_resource *resource)
    if (!(ec = wl_resource_get_user_data(resource))) return;
    if (!ec->comp_data) return;
 
-   ec->comp_data->frames =
-     eina_list_remove(ec->comp_data->frames, resource);
+   if (ec->comp_data->frames)
+     {
+        ec->comp_data->frames =
+          eina_list_remove(ec->comp_data->frames, resource);
+     }
 
-   ec->comp_data->pending.frames =
-     eina_list_remove(ec->comp_data->pending.frames, resource);
+   if (ec->comp_data->pending.frames)
+     {
+        ec->comp_data->pending.frames =
+          eina_list_remove(ec->comp_data->pending.frames, resource);
+     }
 }
 
 static void
@@ -4398,6 +4405,7 @@ _e_comp_wl_client_usable_get(pid_t pid, E_Pixmap *ep)
 
              /* to set-up comp data */
              _e_comp_wl_client_cb_new(NULL, ec);
+             if (!ec->comp_data) return NULL;
              _e_comp_wl_client_evas_init(ec);
           }
      }