Cleanup diff against upstream. Add comments

I did a `git diff --stat` against upstream and looked at all the files
that are outside of YJIT to come up with these minor changes.

1 files changed, 1 insertions, 1 deletions

diff --git a/vm.c b/vm.c
index f535c19722..ce7d4c66d3 100644
--- a/vm.c
+++ b/vm.c
@@ -1853,7 +1853,7 @@ rb_vm_check_redefinition_opt_method(const rb_method_entry_t *me, VALUE klass)
         if (st_lookup(vm_opt_method_def_table, (st_data_t)me->def, &bop)) {
             int flag = vm_redefinition_check_flag(klass);
             rb_yjit_bop_redefined(klass, me, (enum ruby_basic_operators)bop);
-               ruby_vm_redefined_flag[bop] |= flag;
+            ruby_vm_redefined_flag[bop] |= flag;
         }
     }
 }