BaseConnection::ensureChannel(): Fixed requirements for the request argument.
BaseConnection::ensureChannel(): Fixed requirements for the request argument.

ensureChannel() have the same request argument semantic as createChannel(),
so only ChannelType key must be present.

tiagosh/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyIM/telepathy-qt,tiagosh/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyIM/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyIM/telepathy-qt,tiagosh/telepathy-qt,tiagosh/telepathy-qt,TelepathyQt/telepathy-qt,TelepathyQt/telepathy-qt