Fix PartyLine so that forced channels may not be left at all - users will be rejoined at once.

modules/partyline.cpp

@@ -362,6 +362,10 @@ public:
 					+ sCmd + pChannel->GetName() + sMsg, false, true, pUser);
 		}
 
+		if (m_ssDefaultChans.find(pChannel->GetName()) != m_ssDefaultChans.end()) {
+			JoinUser(pUser, pChannel);
+		}
+
 		if (ssNicks.empty()) {
 			delete pChannel;
 			m_ssChannels.erase(pChannel);