(Fx_show_tip): Add missing UNGCPRO.

src/ChangeLog

@@ -1,3 +1,7 @@
+1999-12-20  Dave Love  <fx@gnu.org>
+
+	* xfns.c (Fx_show_tip): Add missing UNGCPRO.
+
 1999-12-19  Gerd Moellmann  <gerd@gnu.org>
 
 	* eval.c (debugger_may_continue): New variable.

src/xfns.c

@@ -9869,7 +9869,8 @@ TIMEOUT nil means use the default timeout of 5 seconds.")
   /* Let the tip disappear after timeout seconds.  */
   tip_timer = call3 (intern ("run-at-time"), timeout, Qnil,
 		     intern ("x-hide-tip"));
-  
+
+  UNGCPRO;
   return unbind_to (count, Qnil);
 }