Fix fs.WriteStream.end(data, [encoding]) throws TypeError

lib/fs.js

@@ -1052,7 +1052,15 @@ WriteStream.prototype.write = function(data) {
   return false;
 };
 
-WriteStream.prototype.end = function(cb) {
+WriteStream.prototype.end = function(data, encoding, cb) {
+  if (typeof(data) === 'function') {
+    cb = data;
+  } else if (typeof(encoding) === 'function') {
+    cb = encoding;
+    this.write(data);
+  } else if (arguments.length > 0) {
+    this.write(data, encoding);
+  }
   this.writable = false;
   this._queue.push([fs.close, cb]);
   this.flush();

test/simple/test-fs-write-stream-end.js

@@ -0,0 +1,25 @@
+var common = require('../common');
+var assert = require('assert');
+
+var path = require('path'),
+    fs = require('fs');
+
+var writeEndOk = false;
+(function() {
+  debugger;
+  var file = path.join(common.tmpDir, 'write-end-test.txt');
+  var stream = fs.createWriteStream(file);
+
+  stream.end('a\n', 'utf8', function() {
+    var content = fs.readFileSync(file, 'utf8');
+    assert.equal(content, 'a\n');
+    writeEndOk = true;
+  });
+
+})();
+
+
+process.on('exit', function() {
+  assert.ok(writeEndOk);
+});
+