From 42ff994a098d528966409fa3478ebbe0c4ac310f Mon Sep 17 00:00:00 2001
From: Emily Stark <emily@meteor.com>
Date: Mon, 24 Feb 2014 20:52:55 -0800
Subject: [PATCH] Avoid returning twice on error in `files.run`

---
 tools/files.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/files.js b/tools/files.js
index 51ac720dd5..71dd92956e 100644
--- a/tools/files.js
+++ b/tools/files.js
@@ -478,9 +478,11 @@ files.run = function (command /*, arguments */) {
   var child_process = require("child_process");
   child_process.execFile(
     command, args, {}, function (error, stdout, stderr) {
-      if (! (error === null || error.code === 0))
+      if (! (error === null || error.code === 0)) {
         future.return(null);
-      future.return(stdout);
+      } else {
+        future.return(stdout);
+      }
     });
   return future.wait();
 };