Revert "Add direct marking on iseq operands"

This reverts commit r62706.

It causes SEGV on i686-linux (debian) and armv7l-linux-eabihf:
http://www.rubyist.net/~akr/chkbuild/debian/ruby-trunk/log/20180309T204300Z.diff.html.gz
http://rubyci.s3.amazonaws.com/scw-9d6766/ruby-trunk/log/20180309T211706Z.diff.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62775 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/insns.def b/insns.def
index da54e0a4b1..73f2495ea9 100644
--- a/insns.def
+++ b/insns.def
@@ -972,11 +972,11 @@ setinlinecache
 /* run iseq only once */
 DEFINE_INSN
 once
-(ISEQ iseq, ISE ise)
+(ISEQ iseq, IC ic)
 ()
 (VALUE val)
 {
-    val = vm_once_dispatch(ec, iseq, ise);
+    val = vm_once_dispatch(ec, iseq, ic);
 }
 
 /* case dispatcher, jump by table if possible */