update webContents.session.setProxy to promisified

Author: flotwig

packages/server/lib/gui/windows.coffee

@@ -34,11 +34,10 @@ setWindowProxy = (win) ->
   if not process.env.HTTP_PROXY
     return
 
-  return new Promise (resolve) ->
-    win.webContents.session.setProxy({
-      proxyRules: process.env.HTTP_PROXY
-      proxyBypassRules: process.env.NO_PROXY
-    }, resolve)
+  win.webContents.session.setProxy({
+    proxyRules: process.env.HTTP_PROXY
+    proxyBypassRules: process.env.NO_PROXY
+  })
 
 module.exports = {
   reset: ->