SERVER: Cleared queued packets when changing map

See bug QW-Group#488

CL_ClearState() is called directly from the server
  code (QW-Group@da33c16)

Anyway this clears cl.protoversion, but a delayed
  packet could still arrive with the reliable data
  from the very end of the previous map, and also
  svc_playerinfo messages.  As CL_ClearState()
  blanks cl.protocolversion, we then don't know
  the format of svc_playerinfo.

Probably needs looking into more (we can probably
  afford to waste more memory now and keep client/
  server map data distinct?) but this seems to help
  in the meantime.

client.h

@@ -1198,6 +1198,7 @@ typedef struct cl_delayed_packet_s
 
 qbool CL_QueInputPacket(void);
 qbool CL_UnqueOutputPacket(qbool sendall);
+void CL_ClearQueuedPackets(void);
 
 // ===================================================================================
 

host.c

@@ -394,9 +394,10 @@ void Host_EndGame (void)
 #ifndef CLIENTONLY
 	SV_Shutdown ("Server was killed");
 #endif
-	CL_Disconnect ();
+	CL_Disconnect();
 	// clear disconnect messages from loopback
-	NET_ClearLoopback ();
+	CL_ClearQueuedPackets();
+	NET_ClearLoopback();
 }
 
 //This shuts down both the client and server

net.c

@@ -1530,6 +1530,13 @@ qbool CL_QueInputPacket(void)
 
 	return NET_PacketQueueAdd(&delay_queue_get, net_message.data, net_message.cursize, net_from);
 }
+
+void CL_ClearQueuedPackets(void)
+{
+	memset(&delay_queue_get, 0, sizeof(delay_queue_get));
+	memset(&delay_queue_send, 0, sizeof(delay_queue_send));
+	delay_queue_send.outgoing = true;
+}
 #endif
 
 #ifndef CLIENTONLY

sv_init.c

@@ -22,6 +22,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #ifndef CLIENTONLY
 #include "qwsvdef.h"
 
+#ifndef SERVERONLY
+void CL_ClearState(void);
+void CL_ClearQueuedPackets(void);
+#endif
+
 server_static_t	svs;				// persistent server info
 server_t		sv;					// local server
 demo_t			demo;				// server demo struct
@@ -214,9 +219,6 @@ void SV_SpawnServer(char *mapname, qbool devmap, char* entityfile, qbool loading
 	char oldmap[MAP_NAME_LEN];
 	extern qbool	sv_allow_cheats;
 	extern cvar_t	sv_cheats, sv_paused, sv_bigcoords;
-#ifndef SERVERONLY
-	extern void CL_ClearState (void);
-#endif
 
 	// store old map name
 	snprintf (oldmap, MAP_NAME_LEN, "%s", sv.mapname);
@@ -631,7 +633,8 @@ void SV_SpawnServer(char *mapname, qbool devmap, char* entityfile, qbool loading
 	SV_MVD_Record(NULL, true);
 
 #ifndef SERVERONLY
-	CL_ClearState ();
+	CL_ClearState();
+	CL_ClearQueuedPackets();
 #endif
 }