Avoid closing a WriteStream before it has been opened.

lib/fs.js

@@ -949,20 +949,23 @@ WriteStream.prototype.destroy = function (cb) {
   var self = this;
   this.writeable = false;
 
+  function close() {
     fs.close(self.fd, function(err) {
       if (err) {
-      if (cb) {
+        if (cb) { cb(err); }
-        cb(err);
-      }
-
         self.emit('error', err);
         return;
       }
 
-    if (cb) {
+      if (cb) { cb(null); }
-      cb(null);
-    }
       self.emit('close');
     });
+  }
+
+  if (this.fd) {
+    close();
+  } else {
+    this.addListener('open', close);
+  }
 };
 

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

@@ -0,0 +1,19 @@
+common = require("../common");
+assert = common.assert
+
+var path = require('path'),
+    fs = require('fs');
+    
+var file = path.join(common.fixturesDir, "write.txt");
+
+(function() {
+  var stream = fs.createWriteStream(file),
+      _fs_close = fs.close;
+      
+  fs.close = function(fd) {
+    assert.ok(fd, "fs.close must not be called without an undefined fd.")
+    fs.close = _fs_close;
+  }
+  stream.destroy();
+})();
+