similar to #72663 and #72658, don't memdump unless compiled explicitely

* xsltproc/xsltproc.c: similar to #72663 and #72658, don't memdump
  unless compiled explicitely with memory debugging switched on
* TODO: refreshed a bit
Daniel

xsltproc/xsltproc.c

@@ -616,7 +616,9 @@ main(int argc, char **argv)
 done:
     xsltCleanupGlobals();
     xmlCleanupParser();
+#ifdef WITH_MEM_DEBUG
     xmlMemoryDump();
+#endif
     return(errorno);
 }