buffer: improve Buffer.equals performance

PR-URL: #50621
Refs: #50620
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Debadree Chatterjee <debadree333@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

lib/buffer.js

@@ -860,11 +860,11 @@ Buffer.prototype.equals = function equals(otherBuffer) {
 
   if (this === otherBuffer)
     return true;
-
-  if (this.byteLength !== otherBuffer.byteLength)
+  const len = TypedArrayPrototypeGetByteLength(this);
+  if (len !== TypedArrayPrototypeGetByteLength(otherBuffer))
     return false;
 
-  return this.byteLength === 0 || _compare(this, otherBuffer) === 0;
+  return len === 0 || _compare(this, otherBuffer) === 0;
 };
 
 let INSPECT_MAX_BYTES = 50;