PR c++/60532
	PR c++/58678
	* search.c (get_pure_virtuals): Handle abstract dtor here.
	(dfs_get_pure_virtuals): Not here.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@208586 138bc75d-0d04-0410-961f-82ee72b054a4