ZF-8478: getMethodSignature() returns string when system.* methods are registered


We are using a python xmlrpc server set up with SimpleXMLRPCServer. If introspection methods are registered (s.…) Zend_XmlRpc_Client_ServerIntrospection::getMethodSignature() will return a string ("signatures not supported") that causes E_WARNING in Zend_XmlRpc_Client::call() because it ($signatures) should be an array.


Checked the bug and find out that the error occurs when introspection methods are registered.

Fixed in r19733.