Land rapid7#4759, fix ms09_067_excel_featheader

Author: wchen-r7

modules/exploits/windows/fileformat/ms09_067_excel_featheader.rb

@@ -96,7 +96,7 @@ def initialize(info = {})
     register_options(
       [
         OptString.new('FILENAME', [ true, 'The file name.',  'msf.xls']),
-        OptString.new('OUTPUTPATH', [ true, 'The output path to use.', Msf::Config.config_directory + "/data/exploits/"]),
+        OptString.new('OUTPUTPATH', [ true, 'The output path to use.', Msf::Config.local_directory]),
       ], self.class)
   end
 
@@ -146,7 +146,7 @@ def exploit
 
     print_status("Creating Excel spreadsheet ...")
 
-    out = File.expand_path(File.join(datastore['OUTPUTPATH'], datastore['FILENAME']))
+    out = File.join(File.join(datastore['OUTPUTPATH'], datastore['FILENAME']))
     stg = Rex::OLE::Storage.new(out, Rex::OLE::STGM_WRITE)
     if (not stg)
       fail_with(Failure::Unknown, 'Unable to create output file')