Fix a Perl variable scoping bug.
Fix a Perl variable scoping bug.

Patch by: Jim Paris <jim@jtan.com>

* contrib/client-side/svn_load_dirs.pl.in
  (safe_read_from_pipe):
    The $openfork_available variable in global scope is never properly
    initialized because its declaration comes after the script's
    'exit 0;' line.  Move the declaration into the function.  This bug
    resulted in /bin/sh being used when it doesn't need to be.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@854856 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion