fix "unreferenced" warnings

stepmania/stepmania.nsi

@@ -375,6 +375,7 @@ LangString TEXT_IO_INSTALL		${LANG_ITALIAN} "Install (I)"
 LangString TEXT_IO_PLAY			${LANG_ITALIAN} "Play (I)"
 LangString TEXT_IO_REINSTALL	${LANG_ITALIAN} "Reinstall (I)"
 
+!ifdef SHOW_AUTORUN
 Var hwnd ; Window handle of the custom page
 
 Function ShowCustom
@@ -444,6 +445,7 @@ Function LeaveCustom
 	ShowWindow $1 1
 
 FunctionEnd
+!endif
 
 Function PreInstall
 
@@ -542,17 +544,6 @@ Function .onInit
 
 FunctionEnd
  
-;--------------------------------
-;Descriptions
-
-	;USE A LANGUAGE STRING IF YOU WANT YOUR DESCRIPTIONS TO BE LANGAUGE SPECIFIC
-
-	;Assign descriptions to sections
-	!insertmacro MUI_FUNCTION_DESCRIPTION_BEGIN
-		!insertmacro MUI_DESCRIPTION_TEXT ${SecMain} "A test section."
-	!insertmacro MUI_FUNCTION_DESCRIPTION_END
-
- 
 ;--------------------------------
 ;Uninstaller Section