fix a memory leak and add a suppression

chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc

Index: chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc
diff --git a/chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc b/chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc
index cfa4dadfb6c1c05b51aee215296fecc8699dc006..133ee512388f9a4eb34129c3201fe61e6200faf9 100644
--- a/chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc
+++ b/chrome/browser/ui/gtk/bookmarks/bookmark_utils_gtk.cc
@@ -172,11 +172,11 @@ GdkPixbuf* GetPixbufForNode(const BookmarkNode* node, BookmarkModel* model,
     if (model->GetFavicon(node).width() != 0) {
       pixbuf = gfx::GdkPixbufFromSkBitmap(model->GetFavicon(node));
     } else {
-      pixbuf = GtkThemeService::GetDefaultFavicon(native)->ToGdkPixbuf();
+      pixbuf = GtkThemeService::GetDefaultFavicon(native).ToGdkPixbuf();
       g_object_ref(pixbuf);
     }
   } else {
-    pixbuf = GtkThemeService::GetFolderIcon(native)->ToGdkPixbuf();
+    pixbuf = GtkThemeService::GetFolderIcon(native).ToGdkPixbuf();
     g_object_ref(pixbuf);
   }