Remove some special-casing of empty string which led to dangling pointers.

Remove some special-casing of empty string which led to dangling pointers.

2006-04-27  Matthias Clasen  <mclasen@redhat.com>

	* glib/gbookmarkfile.c (g_bookmark_file_set_description)
	(g_bookmark_file_set_title, g_bookmark_file_set_icon):
	Remove some special-casing of empty string which led to
	dangling pointers.  (#339337, Morten Welinder)
	(expand_exec_line): Don't use printf() needlessly, handle
	trailing '%' gracefully.  (#339338, Morten Welinder)
	(is_element_full): Silence the compiler.