lib: add missing `new` for errors lib/*.js

Not including `new` adds a useless frame and removes a potentially
useful frame.

PR-URL: https://github.com/iojs/io.js/pull/1246
Reviewed-By: Petka Antonov <petka_antonov@hotmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/child_process.js b/lib/child_process.js
index 5fcd260394..a38de2867d 100644
--- a/lib/child_process.js
+++ b/lib/child_process.js
@@ -860,9 +860,9 @@ function _validateStdio(stdio, sync) {
         // Cleanup previously created pipes
         cleanup();
         if (!sync)
-          throw Error('Child process can have only one IPC pipe');
+          throw new Error('Child process can have only one IPC pipe');
         else
-          throw Error('You cannot use IPC with synchronous forks');
+          throw new Error('You cannot use IPC with synchronous forks');
       }
 
       ipc = createPipe(true);