Match MAXSERVERLIST to MAXNETNODES, increase MAXNETNODES

Each server in the server list requires a node. It's also MAXNETNODES-1 because
the first node is yourself.

(cherry picked from commit 1484f0484f6c22382b2cae955a93c01f83d54655)

src/d_clisrv.h

@@ -14,6 +14,7 @@
 #define __D_CLISRV__
 
 #include "d_ticcmd.h"
+#include "d_net.h"
 #include "d_netcmd.h"
 #include "d_net.h"
 #include "tables.h"
@@ -483,7 +484,7 @@ typedef struct
 #pragma pack()
 #endif
 
-#define MAXSERVERLIST 64 // Depends only on the display
+#define MAXSERVERLIST (MAXNETNODES-1)
 typedef struct
 {
 	SINT8 node;

src/d_net.h

@@ -19,7 +19,7 @@
 #define __D_NET__
 
 // Max computers in a game
-#define MAXNETNODES (MAXPLAYERS+4)
+#define MAXNETNODES 64
 #define BROADCASTADDR MAXNETNODES
 #define MAXSPLITSCREENPLAYERS 2 // Max number of players on a single computer
 //#define NETSPLITSCREEN // Kart's splitscreen netgame feature