op.c: Add comment

diff --git a/op.c b/op.c
index abe32e7..51ffac2 100644 (file)
--- a/op.c
+++ b/op.c
@@ -4642,7 +4642,7 @@ S_gen_constant_list(pTHX_ OP *o)
     old_next = o->op_next;
     o->op_next = 0;
     op_was_null = o->op_type == OP_NULL;
-    if (op_was_null)
+    if (op_was_null) /* b3698342565fb462291fba4b432cfcd05b6eb4e1 */
        o->op_type = OP_CUSTOM;
     CALL_PEEP(curop);
     if (op_was_null)