Seems that unit testing is actually useful: 
fix EOF issue with translated streams detected by unit testing.

* subversion/libsvn_subr/subst.c
  (translated_stream_skip): stop reading from the stream
   if we aren't getting any more data.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/integrate-stream-api-extensions@1072514 13f79535-47bb-0310-9956-ffa450edef68