-// bug in X causes XRenderExtensionInfo to be damaged if this is done here
-// left to be done in XCloseDisplay by Xlib.
-#if defined(HAVE_XFT) && 0
+// past bug in X caused XRenderExtensionInfo to be damaged
+// if this is done here. left to be done in XCloseDisplay by Xlib.
+// works in more modern systems, and needed for leak testing.
+#if defined(HAVE_XFT) && defined(VALGRIND)