Use a consistent checksum mismatch message
 
* subversion/libsvn_client/copy_foreign.c
  (file_close): make message identical to to that used elsewhere

Approved by: breser


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1437744 13f79535-47bb-0310-9956-ffa450edef68