* verify.cc (type::isnull): New method.

	(require_array_type): Handle case where array is null.
	(verify_instructions_0) [op_arraylength]: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@49555 138bc75d-0d04-0410-961f-82ee72b054a4