Linux build: Fix incorrect log output (#381)

Now we use a function closure to capture the `destArch` variable so the
for loop can't change it.

bin/package.js

@@ -291,16 +291,26 @@ function buildWin32 (cb) {
 }
 
 function buildLinux (packageType, cb) {
+  var distPath = path.join(config.ROOT_PATH, 'dist')
+
   electronPackager(Object.assign({}, all, linux), function (err, buildPath) {
     if (err) return cb(err)
 
-    var distPath = path.join(config.ROOT_PATH, 'dist')
-
     for (var i = 0; i < buildPath.length; i++) {
       var filesPath = buildPath[i]
       var destArch = filesPath.split('-').pop()
 
       if (packageType === 'deb' || packageType === 'all') {
+        packageDeb(filesPath, destArch)
+      }
+
+      if (packageType === 'zip' || packageType === 'all') {
+        packageZip(filesPath, destArch)
+      }
+    }
+  })
+
+  function packageDeb (filesPath, destArch) {
     // Create .deb file for debian based platforms
     var deb = require('nobin-debian-installer')()
     var destPath = path.join('/opt', pkg.name)
@@ -321,13 +331,13 @@ function buildLinux (packageType, cb) {
       dest: destPath,
       expand: true,
       cwd: filesPath
-        }], function (err, done) {
+    }], function (err) {
       if (err) return console.error(err.message || err)
       console.log('Created Linux ' + destArch + ' .deb file.')
     })
   }
 
-      if (packageType === 'zip' || packageType === 'all') {
+  function packageZip (filesPath, destArch) {
     // Create .zip file for Linux
     var zipPath = path.join(config.ROOT_PATH, 'dist', BUILD_NAME + '-linux-' + destArch + '.zip')
     var appFolderName = path.basename(filesPath)
@@ -335,8 +345,6 @@ function buildLinux (packageType, cb) {
     console.log('Created Linux ' + destArch + ' .zip file.')
   }
 }
-  })
-}
 
 function printDone (err, buildPath) {
   if (err) console.error(err.message || err)