Followup to r23149, properly fixing issue #2701.
Followup to r23149, properly fixing issue #2701.

* subversion/libsvn_subr/subst.c
  (create_special_file_from_stringbuf): Don't modify the in-memory
    representation of the special file, allowing it to be written out
    later on platforms that don't support symlinks.

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