playlist: Handle vlc_InputItemErrorWhenReadingChanged events.

src/playlist/item.c

@@ -134,6 +134,8 @@ static void install_input_item_observer( playlist_item_t * p_item )
                       input_item_changed, p_item );
     vlc_event_attach( p_em, vlc_InputItemInfoChanged,
                       input_item_changed, p_item );
+    vlc_event_attach( p_em, vlc_InputItemErrorWhenReadingChanged,
+                      input_item_changed, p_item );
 }
 
 static void uninstall_input_item_observer( playlist_item_t * p_item )
@@ -149,6 +151,8 @@ static void uninstall_input_item_observer( playlist_item_t * p_item )
                       input_item_changed, p_item );
     vlc_event_detach( p_em, vlc_InputItemInfoChanged,
                       input_item_changed, p_item );
+    vlc_event_detach( p_em, vlc_InputItemErrorWhenReadingChanged,
+                      input_item_changed, p_item );
 }
 
 /*****************************************************************************