[zanata/zanata-platform] 6d5507: fix warning

[GitHub]

  Branch: refs/heads/ZNTA-1841-saml
  Home:   https://github.com/zanata/zanata-platform
  Commit: 6d55071f8a5cbab7681c1504b22f1acfaba6de6a
      https://github.com/zanata/zanata-platform/commit/6d55071f8a5cbab7681c1504b22f1acfaba6de6a
  Author: Patrick Huang <pahuang at redhat.com>
  Date:   2017-10-09 (Mon, 09 Oct 2017)

  Changed paths:
    M server/services/src/main/java/org/zanata/servlet/SAMLFilter.kt

  Log Message:
  -----------
  fix warning