Followup to r16450. Do not rely on falling off the end of a Python function to return None, because it is unclear.
Followup to r16450. Do not rely on falling off the end of a Python function to
return None, because it is unclear.

* subversion/bindings/swig/proxy/proxy_apr.swg
  (apr_pool_t._wrap): Add explicit 'return None'.

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