remove xml debug code

ext/dom/php_dom.c

@@ -680,7 +680,7 @@ PHP_MSHUTDOWN_FUNCTION(dom)
 	uncomment the following line, this will tell you the amount of not freed memory
 	and the total used memory into apaches error_log  */
 /*  xmlMemoryDump();*/
-xmlMemoryDump();
+
 	return SUCCESS;
 }