Report transaction name rather than revision number in error message from 'pget'
if it was run with -t option.

Obvious fix.

* subversion/svnlook/svnlook.c
  (do_pget): Report c->txn_name if the revision number is invalid.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1623317 13f79535-47bb-0310-9956-ffa450edef68