From a9af97733e1154bee3cb309bb16b357025993508 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Wed, 29 Sep 2010 10:08:30 +0200
Subject: [PATCH] Allowed NULL as second arg of iso_write_opts_detach_jte().

---
 libisofs/ecma119.c  | 5 +++--
 libisofs/libisofs.h | 3 ++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/libisofs/ecma119.c b/libisofs/ecma119.c
index f8589a0..447d193 100644
--- a/libisofs/ecma119.c
+++ b/libisofs/ecma119.c
@@ -1402,7 +1402,7 @@ int ecma119_image_new(IsoImage *src, IsoWriteOpts *opts, Ecma119Image **img)
     iso_path = "/home/test/test_jte.iso";
     template_path = "/home/test/test_jte.template";
     jigdo_path = "/home/test/test_jte.jigdo";
-    mapping = "Debian=/home/test/cdrskin-0.7.2";
+    mapping = "Debian=/home/test/cdrskin-0.7.2/";
     force_md5_pattern = "/home/test/cdrskin-0.7.2/libburn/";
 
     /* md5 list produced by xorriso/make_jigdo_md5_entry.sh */
@@ -2609,7 +2609,8 @@ int iso_write_opts_detach_jte(IsoWriteOpts *opts, void **libjte_handle)
 {
 #ifdef Libisofs_with_libjtE
 
-    *libjte_handle = opts->libjte_handle;
+    if (*libjte_handle != NULL)
+        *libjte_handle = opts->libjte_handle;
     opts->libjte_handle = NULL;
     return ISO_SUCCESS;
 
diff --git a/libisofs/libisofs.h b/libisofs/libisofs.h
index af40a4d..70016d9 100644
--- a/libisofs/libisofs.h
+++ b/libisofs/libisofs.h
@@ -1877,7 +1877,8 @@ int iso_write_opts_attach_jte(IsoWriteOpts *opts, void *libjte_handle);
  * @param opts
  *        The option set to be manipulated.
  * @param libjte_handle
- *        Returns the previously set libjte handle
+ *        If not submitted as NULL, this will return the previously set
+ *        libjte handle. 
  * @return
  *        ISO_SUCCESS or error
  *