[xmlunit/xmlunit.net] 8dafed: must declare _ for .NET 3.5

[Stefan B. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/xmlunit/xmlunit.net
  Commit: 8dafedeac2a787a66616d5c8cf9c5c37db8c403d
      https://github.com/xmlunit/xmlunit.net/commit/8dafedeac2a787a66616d5c8cf9c5c37db8c403d
  Author: Stefan Bodewig <ste...@fr...>
  Date:   2020-05-07 (Thu, 07 May 2020)

  Changed paths:
    M src/main/net-placeholders/IsDateTimePlaceholderHandler.cs

  Log Message:
  -----------
  must declare _ for .NET 3.5