fixed buffer overflow

SSUData.cpp

@@ -253,6 +253,7 @@ namespace ssu
 		while (len > 0)
 		{	
 			Fragment * fragment = new Fragment;
+			fragment->fragmentNum = fragmentNum;
 			uint8_t * buf = fragment->buf;
 			fragments.push_back (fragment);
 			uint8_t	* payload = buf + sizeof (SSUHeader);

SSUData.h

@@ -14,7 +14,7 @@ namespace i2p
 namespace ssu
 {
 
-	const size_t SSU_MTU = 1484;
+	const size_t SSU_MTU = 1472; // 1484;
 	const int RESEND_INTERVAL = 3; // in seconds
 	const int MAX_NUM_RESENDS = 5;
 	// data flags