tls: don't shadow the tls global with a local

`tls` shadows the global `tls` require, and isn't indicative of the arument type. PR-URL: #25861 Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>

Author: sam-github

lib/_tls_wrap.js

@@ -277,19 +277,19 @@ function onerror(err) {
 
 // Used by both client and server TLSSockets to start data flowing from _handle,
 // read(0) causes a StreamBase::ReadStart, via Socket._read.
-function initRead(tls, socket) {
+function initRead(tlsSocket, socket) {
  // If we were destroyed already don't bother reading
- if (!tls._handle)
+ if (!tlsSocket._handle)
  return;
 
  // Socket already has some buffered data - emulate receiving it
  if (socket && socket.readableLength) {
  var buf;
  while ((buf = socket.read()) !== null)
- tls._handle.receive(buf);
+ tlsSocket._handle.receive(buf);
  }
 
- tls.read(0);
+ tlsSocket.read(0);
 }
 
 /**