Add missing s in comspec

package.json

@@ -1,7 +1,7 @@
 {
   "name": "atom",
   "productName": "Atom",
-  "version": "0.164.0",
+  "version": "0.165.0",
   "description": "A hackable text editor for the 21st Century.",
   "main": "./src/browser/main.js",
   "repository": {

src/buffered-process.coffee

@@ -202,7 +202,7 @@ class BufferedProcess
 
   getCmdPath: ->
     if process.env.comspec
-      process.env.compec
+      process.env.comspec
     else if process.env.SystemRoot
       path.join(process.env.SystemRoot, 'System32', 'cmd.exe')
     else