QPID-7234: check handler is not null (as it will be when releasing unused prefetch on close)

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1745195 13f79535-47bb-0310-9956-ffa450edef68
2 files changed
tree: bab3e3406b4c09d29f393b559a4c4374876fa5f0
  1. qpid/
  2. .gitignore
  3. .mailmap
  4. .travis.yml
  5. appveyor.yml