re PR lto/91375 (ICE on valid code in subbinfo_with_vtable_at_offset at ipa-devirt.c:2760 since r256685)

2019-08-12  Richard Biener  <rguenther@suse.de>

	PR lto/91375
	* tree.c (free_lang_data_in_type): Do not free TYPE_BINFO dependent on
	flag_devirtualize.

From-SVN: r274310