https://gcc.gnu.org/ml/gcc-patches/2018-09/msg00249.html
	cp/
	PR c++/87185
	* lambda.c (prune_lambda_captures): Protect against const_vars.get
	returning NULL.
	testsuite/
	PR c++/87185
	* g++.dg/pr87185.C: New.

From-SVN: r264118