Stop calling `rb_iseq_defined_string` in vm_defined

We already have access to the string from the iseqs, so we can stop
calling this function.

1 files changed, 1 insertions, 1 deletions

diff --git a/insns.def b/insns.def
index 55564c4792..ca56416d23 100644
--- a/insns.def
+++ b/insns.def
@@ -667,7 +667,7 @@ defined
 (VALUE val)
 // attr bool leaf = leafness_of_defined(op_type);
 {
-    if (vm_defined(ec, GET_CFP(), op_type, obj, Qfalse, v)) {
+    if (vm_defined(ec, GET_CFP(), op_type, obj, v)) {
       val = needstr;
     }
     else {