don't put leading comma in ClientServicesInfo reply

[pobregat0]

The comma was written by iterator position, not by what has already been put
into the reply. Token is a required parameter of every request, so a client
that sends it before the service name gets a reply starting with a comma:

{"id":2,"result":{,"I2PTunnel":{"client":{...

which is not valid JSON. RouterInfoHandler right above does it with a flag,
this makes ClientServicesInfo do the same.

[wipedlifepotato]

По сути чинит ситуацию, когда первый аргумент не проходит правило

		auto it1 = m_ClientServicesInfoHandlers.find (it->first);
		if (it1 != m_ClientServicesInfoHandlers.end ())

А всё остальное тож самое. Вероятность такого, вообще чем могло быть вызвано

[wipedlifepotato]

кк