engine: initialize network buffers used on player connect and after

engine/client/cl_main.c

@@ -709,6 +709,7 @@ void CL_WritePacket( void )
 
 	CL_ComputePacketLoss ();
 
+	memset( data, 0, sizeof( data ));
 	MSG_Init( &buf, "ClientData", data, sizeof( data ));
 
 	// Determine number of backup commands to send along

engine/common/net_chan.c

@@ -1589,6 +1589,7 @@ void Netchan_TransmitBits( netchan_t *chan, int length, byte *data )
 		}
 	}
 
+	memset( send_buf, 0, sizeof( send_buf ));
 	MSG_Init( &send, "NetSend", send_buf, sizeof( send_buf ));
 
 	// prepare the packet header

engine/server/sv_client.c

@@ -1632,6 +1632,7 @@ static qboolean SV_New_f( sv_client_t *cl )
 	sizebuf_t		msg;
 	int		i;
 
+	memset( msg_buf, 0, sizeof( msg_buf ));
 	MSG_Init( &msg, "New", msg_buf, sizeof( msg_buf ));
 
 	if( cl->state != cs_connected )
@@ -1982,6 +1983,7 @@ static qboolean SV_SendRes_f( sv_client_t *cl )
 	if( cl->state != cs_connected )
 		return false;
 
+	memset( buffer, 0, sizeof( buffer ));
 	MSG_Init( &msg, "SendResources", buffer, sizeof( buffer ));
 
 	if( svs.maxclients > 1 && FBitSet( cl->flags, FCL_SEND_RESOURCES ))

engine/server/sv_frame.c

@@ -711,6 +711,7 @@ void SV_SendClientDatagram( sv_client_t *cl )
 	byte	msg_buf[MAX_DATAGRAM];
 	sizebuf_t	msg;
 
+	memset( msg_buf, 0, sizeof( msg_buf ));
 	MSG_Init( &msg, "Datagram", msg_buf, sizeof( msg_buf ));
 
 	// always send servertime at new frame