correct buffer size for fragments of SessionConfirmed

libi2pd/SSU2Session.h

@@ -190,10 +190,13 @@ namespace transport
 			int numResends = 0;
 		};
 
-		struct HandshakePacket: public SentPacket
+		struct HandshakePacket
 		{
 			Header header;
 			uint8_t headerX[48]; // part1 for SessionConfirmed
+			uint8_t payload[SSU2_MAX_PACKET_SIZE*2];
+			size_t payloadSize = 0;
+			uint32_t nextResendTime = 0; // in seconds
 		};
 
 		typedef std::function<void ()> OnEstablished;