[PATCH] Fix cvar initilisers

Fix cvar initialisers; remove ->next pointer values.

diff -urN a/common/in_x11.c head/common/in_x11.c
--- a/common/in_x11.c	2004-11-03 18:19:52.000000000 +1030
+++ head/common/in_x11.c	2006-02-21 20:19:02.000000000 +1030
@@ -90,10 +90,10 @@
 }
 
 cvar_t in_mouse = { "in_mouse", "1", false };
-cvar_t in_dgamouse = { "in_dgamouse", "1", false, false, 0, NULL,
+cvar_t in_dgamouse = { "in_dgamouse", "1", false, false, 0,
     in_dgamouse_f
 };
-cvar_t _windowed_mouse = { "_windowed_mouse", "0", true, false, 0, NULL,
+cvar_t _windowed_mouse = { "_windowed_mouse", "0", true, false, 0,
     windowed_mouse_f
 };
 cvar_t m_filter = { "m_filter", "0" };