Fix Italian translation issue #2681.
Fix Italian translation issue #2681.

* subversion/po/it.po
  Correct spelling (precendente -> precedente).

Found by: Francesco Montorsi

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