[zanata/zanata-platform] 981da9: reduce 1 findbugs warning

[GitHub]

  Branch: refs/heads/fix-master
  Home:   https://github.com/zanata/zanata-platform
  Commit: 981da9f09597fee6817dbf2c5cb48e086ea3c6a0
      https://github.com/zanata/zanata-platform/commit/981da9f09597fee6817dbf2c5cb48e086ea3c6a0
  Author: Patrick Huang <pahuang at redhat.com>
  Date:   2017-05-08 (Mon, 08 May 2017)

  Changed paths:
    M server/zanata-model/src/main/java/org/zanata/model/Glossary.java

  Log Message:
  -----------
  reduce 1 findbugs warning