* subversion/libsvn_subr/stream.c   (read_range_handler_apr): Always verify that the reader won't read behind    the end of the range. We wrongly skipped this check if the reader was    positioned before the start of the range.
* subversion/libsvn_subr/stream.c
  (read_range_handler_apr): Always verify that the reader won't read behind
   the end of the range. We wrongly skipped this check if the reader was
   positioned before the start of the range.

Found by: julianfoad

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion