tls: fix initRead socket argument name

"wrapped" argument is the caller's "socket", not its "wrap", and its
referred to as "socket" in the comments, so call it that.

Author: sam-github

lib/_tls_wrap.js

@@ -271,15 +271,17 @@ function onerror(err) {
   }
 }
 
-function initRead(tls, wrapped) {
+// 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) {
   // If we were destroyed already don't bother reading
   if (!tls._handle)
     return;
 
   // Socket already has some buffered data - emulate receiving it
-  if (wrapped && wrapped.readableLength) {
+  if (socket && socket.readableLength) {
     var buf;
-    while ((buf = wrapped.read()) !== null)
+    while ((buf = socket.read()) !== null)
       tls._handle.receive(buf);
   }