tls: fix test-https-client-reject fails

Fixes #2417.

lib/tls.js

@@ -719,31 +719,33 @@ SecurePair.prototype.maybeInitFinished = function() {
 
 
 SecurePair.prototype.destroy = function() {
+  if (this._doneFlag) {
+    return;
+  }
+
   var self = this;
   var error = this.ssl.error;
 
-  if (!this._doneFlag) {
-    this._doneFlag = true;
-    this.ssl.error = null;
-    this.ssl.close();
-    this.ssl = null;
+  this._doneFlag = true;
+  this.ssl.error = null;
+  this.ssl.close();
+  this.ssl = null;
 
-    self.encrypted.writable = self.encrypted.readable = false;
-    self.cleartext.writable = self.cleartext.readable = false;
+  self.encrypted.writable = self.encrypted.readable = false;
+  self.cleartext.writable = self.cleartext.readable = false;
 
-    process.nextTick(function() {
-      self.cleartext.emit('end');
-      self.encrypted.emit('close');
-      self.cleartext.emit('close');
-    });
+  process.nextTick(function() {
+    self.cleartext.emit('end');
+    self.encrypted.emit('close');
+    self.cleartext.emit('close');
+  });
 
-    if (!this._secureEstablished) {
-      if (!error) {
-        error = new Error('socket hang up');
-        error.code = 'ECONNRESET';
-      }
-      this.emit('error', error);
+  if (!this._secureEstablished) {
+    if (!error) {
+      error = new Error('socket hang up');
+      error.code = 'ECONNRESET';
     }
+    this.emit('error', error);
   }
 };