fix error messages in Unicode mode

ext/dom/php_dom.c

@@ -307,7 +307,7 @@ zval *dom_read_property(zval *object, zval *member, int type TSRMLS_DC)
 	if (obj->prop_handler != NULL) {
 		ret = zend_u_hash_find(obj->prop_handler, Z_TYPE_P(member), Z_UNIVAL_P(member), Z_UNILEN_P(member)+1, (void **) &hnd);
 	} else if (instanceof_function(obj->std.ce, dom_node_class_entry TSRMLS_CC)) {
-		php_error(E_WARNING, "Couldn't fetch %s. Node no longer exists", obj->std.ce->name);
+		php_error(E_WARNING, "Couldn't fetch %v. Node no longer exists", obj->std.ce->name);
 	}
 	if (ret == SUCCESS) {
 		ret = hnd->read_func(obj, &retval TSRMLS_CC);

ext/dom/xml_common.h

@@ -58,7 +58,7 @@ PHP_DOM_EXPORT xmlNodePtr dom_object_get_node(dom_object *obj);
 #define NODE_GET_OBJ(__ptr, __id, __prtype, __intern) { \
 	__intern = (php_libxml_node_object *)zend_object_store_get_object(__id TSRMLS_CC); \
 	if (__intern->node == NULL || !(__ptr = (__prtype)__intern->node->node)) { \
-  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't fetch %s", __intern->std.ce->name);\
+  		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't fetch %v", __intern->std.ce->name);\
   		RETURN_NULL();\
   	} \
 }
@@ -67,7 +67,7 @@ PHP_DOM_EXPORT xmlNodePtr dom_object_get_node(dom_object *obj);
 	__intern = (php_libxml_node_object *)zend_object_store_get_object(__id TSRMLS_CC); \
 	if (__intern->document != NULL) { \
 		if (!(__ptr = (__prtype)__intern->document->ptr)) { \
-  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't fetch %s", __intern->std.ce->name);\
+  			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Couldn't fetch %v", __intern->std.ce->name);\
   			RETURN_NULL();\
   		} \
 	} \