Related: fdo#56198 avoid gtk warning, take 2

from http://developer.gnome.org/gtk/2.24/GtkSettings.html

  The "gtk-primary-button-warps-slider" property
  ...
  Since: 2.24

but it is 2.24.13 indeed:

https://mail.gnome.org/archives/ftp-release-list/2012-September/msg00195.html

  News
  ====

  * Implement a gtk-primary-button-warps-slider setting
    that lets us adjust scale and scrollbar behaviour
    according to platform.

Change-Id: I4d3170801973e3e6101736971de58d70b673fd58

vcl/unx/gtk/gdi/salnativewidgets-gtk.cxx

@@ -3990,7 +3990,7 @@ void GtkSalGraphics::updateSettings( AllSettings& rSettings )
     gboolean showmenuicons = true, primarybuttonwarps = false;
     g_object_get( pSettings,
         "gtk-menu-images", &showmenuicons,
-#if GTK_CHECK_VERSION(2,24,0)
+#if GTK_CHECK_VERSION(2,24,13)
         "gtk-primary-button-warps-slider", &primarybuttonwarps,
 #endif
         (char *)NULL );