dissect: kill return_type

Now that we have dissect_ctx do_statement(STMT_RETURN) can use
base_type(dissect_ctx->ctype.base_type) instead.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
1 file changed