use reference instead naked pointer to tunnel in tunnel gateway

libi2pd/TransitTunnel.h

@@ -73,7 +73,7 @@ namespace tunnel
 				const i2p::data::IdentHash& nextIdent, uint32_t nextTunnelID,
 				const i2p::crypto::AESKey& layerKey, const i2p::crypto::AESKey& ivKey):
 				TransitTunnel (receiveTunnelID, nextIdent, nextTunnelID,
-				layerKey, ivKey), m_Gateway(this) {};
+				layerKey, ivKey), m_Gateway(*this) {};
 
 			void SendTunnelDataMsg (std::shared_ptr<i2p::I2NPMessage> msg) override;
 			void FlushTunnelDataMsgs () override;

libi2pd/Tunnel.h

@@ -139,7 +139,7 @@ namespace tunnel
 		public:
 
 			OutboundTunnel (std::shared_ptr<const TunnelConfig> config):
-				Tunnel (config), m_Gateway (this), m_EndpointIdentHash (config->GetLastIdentHash ()) {};
+				Tunnel (config), m_Gateway (*this), m_EndpointIdentHash (config->GetLastIdentHash ()) {};
 
 			void SendTunnelDataMsgTo (const uint8_t * gwHash, uint32_t gwTunnel, std::shared_ptr<i2p::I2NPMessage> msg);
 			virtual void SendTunnelDataMsgs (const std::vector<TunnelMessageBlock>& msgs); // multiple messages

libi2pd/TunnelGateway.cpp

@@ -227,8 +227,8 @@ namespace tunnel
 		for (auto& tunnelMsg : tunnelDataMsgs)
 		{
 			auto newMsg = CreateEmptyTunnelDataMsg (false);
-			m_Tunnel->EncryptTunnelMsg (tunnelMsg, newMsg);
-			htobe32buf (newMsg->GetPayload (), m_Tunnel->GetNextTunnelID ());
+			m_Tunnel.EncryptTunnelMsg (tunnelMsg, newMsg);
+			htobe32buf (newMsg->GetPayload (), m_Tunnel.GetNextTunnelID ());
 			newMsg->FillI2NPMessageHeader (eI2NPTunnelData);
 			if (tunnelMsg->onDrop) newMsg->onDrop = tunnelMsg->onDrop;
 			newTunnelMsgs.push_back (newMsg);
@@ -254,7 +254,7 @@ namespace tunnel
 				else // still pending
 				{	
 					// send through transports, but don't update pedning transport
-					i2p::transport::transports.SendMessages (m_Tunnel->GetNextIdentHash (), std::move (newTunnelMsgs));
+					i2p::transport::transports.SendMessages (m_Tunnel.GetNextIdentHash (), std::move (newTunnelMsgs));
 					return;
 				}	
 			}
@@ -264,7 +264,7 @@ namespace tunnel
 			m_CurrentTransport->SendI2NPMessages (newTunnelMsgs);
 		else // no session yet
 			// send through transports
-			m_PendingTransport = i2p::transport::transports.SendMessages (m_Tunnel->GetNextIdentHash (), std::move (newTunnelMsgs));
+			m_PendingTransport = i2p::transport::transports.SendMessages (m_Tunnel.GetNextIdentHash (), std::move (newTunnelMsgs));
 	}
 }
 }

libi2pd/TunnelGateway.h

@@ -47,7 +47,7 @@ namespace tunnel
 	{
 		public:
 
-			TunnelGateway (TunnelBase * tunnel):
+			TunnelGateway (TunnelBase& tunnel):
 				m_Tunnel (tunnel), m_NumSentBytes (0) {};
 			void SendTunnelDataMsg (const TunnelMessageBlock& block);
 			void PutTunnelDataMsg (const TunnelMessageBlock& block);
@@ -56,7 +56,7 @@ namespace tunnel
 
 		private:
 
-			TunnelBase * m_Tunnel;
+			TunnelBase& m_Tunnel;
 			TunnelGatewayBuffer m_Buffer;
 			size_t m_NumSentBytes;
 			std::shared_ptr<i2p::transport::TransportSession> m_CurrentTransport;