Fix a SEGV in lock_tests.py 37 when using neon.
Fix a SEGV in lock_tests.py 37 when using neon.

* subversion/libsvn_ra_neon/lock.c
  (do_lock): Access req before it is destroyed.

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