The behavior is now consistent with ReflectionMethod.

And move it to a more appropriate location.

Validate that "C" serialization payload is followed by "}" prior to
calling the unserialize() handler. This mitigates issues caused by
unserialize() not correctly handling strings that are not NUL
terminated. Making sure that there is a "}" at the end avoids the
problem.

* PHP-7.1:
  Update libs_version.txt