xsession: Fix misnamed variables in sample xsession.

sample-xsession.sh

@@ -103,8 +103,8 @@ path_add "STRIGI_PLUGIN_PATH" "$kde_prefix/$libname/strigi";
 path_add "PYTHONPATH"         "$kde_prefix/$libname/site-packages";
 
 # http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
-path_add "XDG_DATA_DIRS"      "$path/share";
-path_add "XDG_CONFIG_DIRS"    "$path/etc/xdg";
+path_add "XDG_DATA_DIRS"      "$kde_prefix/share";
+path_add "XDG_CONFIG_DIRS"    "$kde_prefix/etc/xdg";
 
 #
 ### Some Convenience stuff