[OpenSmalltalk/opensmalltalk-vm] e2cfdc: Fix whitespace typo

 
  Branch: refs/heads/compile_sista_with_clang
  Home:   https://github.com/OpenSmalltalk/opensmalltalk-vm
  Commit: e2cfdcc731ba6412606c4fbbc28c22dde668d3e3
      https://github.com/OpenSmalltalk/opensmalltalk-vm/commit/e2cfdcc731ba6412606c4fbbc28c22dde668d3e3
  Author: Nicolas Cellier <[hidden email]>
  Date:   2018-04-02 (Mon, 02 Apr 2018)

  Changed paths:
    M .appveyor.yml

  Log Message:
  -----------
  Fix whitespace typo

Sorry, I can't test this locally