From: Po Lu <luangruo@yahoo.com>
Date: Tue, 18 Jan 2022 03:34:55 +0000 (+0800)
Subject: * lisp/tooltip.el: Fix warning when built on a non-Haiku system.
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* lisp/tooltip.el: Fix warning when built on a non-Haiku system.
---

diff --git a/lisp/tooltip.el b/lisp/tooltip.el
index af6f456d7b5..a6392877144 100644
--- a/lisp/tooltip.el
+++ b/lisp/tooltip.el
@@ -339,6 +339,8 @@ This is used by `tooltip-show-help' and
 (defvar tooltip-previous-message nil
   "The previous content of the echo area.")
 
+(defvar haiku-use-system-tooltips)
+
 (defun tooltip-show-help-non-mode (help)
   "Function installed as `show-help-function' when Tooltip mode is off.
 It is also called if Tooltip mode is on, for text-only displays."