--- embedaddon/php/ext/zip/lib/zip_unchange.c	2012/02/21 23:48:05	1.1.1.1
+++ embedaddon/php/ext/zip/lib/zip_unchange.c	2013/07/22 01:32:11	1.1.1.2
@@ -40,7 +40,7 @@
 
 
 ZIP_EXTERN(int)
-zip_unchange(struct zip *za, int idx)
+zip_unchange(struct zip *za, zip_uint64_t idx)
 {
     return _zip_unchange(za, idx, 0);
 }
@@ -48,11 +48,11 @@ zip_unchange(struct zip *za, int idx)
 
 
 int
-_zip_unchange(struct zip *za, int idx, int allow_duplicates)
+_zip_unchange(struct zip *za, zip_uint64_t idx, int allow_duplicates)
 {
     int i;
     
-    if (idx < 0 || idx >= za->nentry) {
+    if (idx >= za->nentry) {
 	_zip_error_set(&za->error, ZIP_ER_INVAL, 0);
 	return -1;
     }
@@ -72,6 +72,9 @@ _zip_unchange(struct zip *za, int idx, int allow_dupli
 	za->entry[idx].ch_filename = NULL;
     }
 
+    free(za->entry[idx].ch_extra);
+    za->entry[idx].ch_extra = NULL;
+    za->entry[idx].ch_extra_len = -1;
     free(za->entry[idx].ch_comment);
     za->entry[idx].ch_comment = NULL;
     za->entry[idx].ch_comment_len = -1;