Fix visual studio server build

dlls/effects.cpp

@@ -410,7 +410,7 @@ LINK_ENTITY_TO_CLASS( trip_beam, CTripBeam )
 void CTripBeam::Spawn( void )
 {
 	CLightning::Spawn();
-	SetTouch( &TriggerTouch );
+	SetTouch( &CLightning::TriggerTouch );
 	pev->solid = SOLID_TRIGGER;
 	RelinkBeam();
 }
@@ -1267,7 +1267,7 @@ void CSprite::TurnOn( void )
 	pev->effects = 0;
 	if( ( pev->framerate && m_maxFrame > 1.0 ) || ( pev->spawnflags & SF_SPRITE_ONCE ) )
 	{
-		SetThink( &CSprite::CSprite::AnimateThink );
+		SetThink( &CSprite::AnimateThink );
 		pev->nextthink = gpGlobals->time;
 		m_lastTime = gpGlobals->time;
 	}

dlls/nodes.cpp

@@ -45,6 +45,8 @@ LINK_ENTITY_TO_CLASS( info_node_air, CNodeEnt )
 #include <unistd.h>
 #include <sys/stat.h>
 #define CreateDirectory(p, n) mkdir(p, 0777)
+#else
+#define CreateDirectory(p, n) CreateDirectoryA(p, n)
 #endif
 
 //=========================================================

dlls/weapons.cpp

@@ -1080,7 +1080,7 @@ void CBasePlayerAmmo::DefaultTouch( CBaseEntity *pOther )
 //=========================================================
 int CBasePlayerWeapon::ExtractAmmo( CBasePlayerWeapon *pWeapon )
 {
-	int iReturn;
+	int iReturn = 0;
 
 	if( pszAmmo1() != NULL )
 	{