add ifndef INFESTED_DLL for hudCloseCaption definition

Author: anf3is

src/game/client/hud_closecaption.cpp

@@ -2883,7 +2883,9 @@ void OnCaptionLanguageChanged( IConVar *pConVar, const char *pOldString, float f
 	char uilanguage[ 64 ];
 	engine->GetUILanguage( uilanguage, sizeof( uilanguage ) );
 
+#ifndef INFESTED_DLL
 	CHudCloseCaption *hudCloseCaption = GET_FULLSCREEN_HUDELEMENT( CHudCloseCaption );
+#endif
 
 	// If it's not the default, load the language on top of the user's default language
 	if ( Q_strlen( var.GetString() ) > 0 && Q_stricmp( var.GetString(), uilanguage ) )