Oracle Bug 15143893 - SUNBT4810740 vsw512 test XtCallbackReleaseCacheRefList
    regresses in S10_26

XtCallbackReleaseCacheRefList() should not be calling XtFree(closure) as it
does not "own" this data.  In the VSW test it points to an automatic array.

Reported upstream:
https://gitlab.freedesktop.org/xorg/lib/libxt/-/issues/15

--- a/src/Convert.c	2022-11-07 19:06:55.487305676 -0800
+++ b/src/Convert.c	2022-11-07 19:07:08.318327812 -0800
@@ -1190,7 +1190,6 @@
 {
     XtAppReleaseCacheRefs(XtWidgetToApplicationContext(widget),
                           (XtCacheRef *) closure);
-    XtFree(closure);
 }
 
 void