CGUIWindowSlideShow: use CGUIViewStateWindowPictures::GetExtensions()…

… as a fallback if no file extensions were specified in RunSlideshow()

xbmc/pictures/GUIWindowSlideShow.cpp

@@ -45,6 +45,7 @@
 #include "utils/log.h"
 #include "utils/TimeUtils.h"
 #include "interfaces/AnnouncementManager.h"
+#include "pictures/GUIViewStatePictures.h"
 #include "pictures/PictureInfoTag.h"
 #include "pictures/PictureThumbLoader.h"
 
@@ -1261,9 +1262,11 @@ void CGUIWindowSlideShow::AddItems(const std::string &strPath, path_set *recursi
     recursivePaths->insert(path);
   }
 
-  // fetch directory and sort accordingly
   CFileItemList items;
-  if (!CDirectory::GetDirectory(strPath, items, m_strExtensions.empty()?g_advancedSettings.m_pictureExtensions:m_strExtensions,DIR_FLAG_NO_FILE_DIRS,true))
+  CGUIViewStateWindowPictures viewState(items);
+
+  // fetch directory and sort accordingly
+  if (!CDirectory::GetDirectory(strPath, items, viewState.GetExtensions(), DIR_FLAG_NO_FILE_DIRS, true))
     return;
 
   items.Sort(method, order, sortAttributes);