Make UpdateOnRemove() virtual.

cl_dll/hl/hl_baseentity.cpp

@@ -55,6 +55,7 @@ BOOL CBaseEntity::IsInWorld( void ) { return TRUE; }
 int CBaseEntity::ShouldToggle( USE_TYPE useType, BOOL currentState ) { return 0; }
 int CBaseEntity::DamageDecal( int bitsDamageType ) { return -1; }
 CBaseEntity *CBaseEntity::Create( const char *szName, const Vector &vecOrigin, const Vector &vecAngles, edict_t *pentOwner ) { return NULL; }
+void CBaseEntity::UpdateOnRemove( void ) { }
 void CBaseEntity::SUB_Remove( void ) { }
 
 // CBaseDelay Stubs

dlls/cbase.h

@@ -12,6 +12,8 @@
 *   without written permission from Valve LLC.
 *
 ****/
+#ifndef CBASE_H
+#define CBASE_H
 /*
 
 Class Hierachy
@@ -229,7 +231,7 @@ public:
 	};
 #endif
 
-	void UpdateOnRemove( void );
+	virtual void UpdateOnRemove( void );
 
 	// common member functions
 	void EXPORT SUB_Remove( void );
@@ -780,3 +782,4 @@ public:
 	void Precache( void );
 	void KeyValue( KeyValueData *pkvd );
 };
+#endif