CryptoStream.prototype.destroySoon shouldn't die if not writable

lib/tls.js

@@ -170,7 +170,11 @@ CryptoStream.prototype.end = function(d) {
 
 
 CryptoStream.prototype.destroySoon = function(err) {
-  return this.end();
+  if (this.writable) {
+    this.end();
+  } else {
+    this.destroy();
+  }
 };