From fe98b35afb2f16b4605d15c523c70541997a72de Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Tue, 13 Aug 2019 10:13:18 +0200
Subject: [PATCH] Made sure that iso_image_get_bootcat() cannot return non-zero
 size with NULL content

---
 libisofs/eltorito.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libisofs/eltorito.c b/libisofs/eltorito.c
index 39a3137..ff7ae8a 100644
--- a/libisofs/eltorito.c
+++ b/libisofs/eltorito.c
@@ -711,13 +711,14 @@ int iso_image_get_bootcat(IsoImage *image, IsoBoot **catnode, uint32_t *lba,
         return 0;
     *catnode = bootcat;
     *lba = bootcat->lba;
-    *size = bootcat->size;
     if (bootcat->size > 0 && bootcat->content != NULL) {
         *content = calloc(1, bootcat->size);
         if (*content == NULL) 
             return ISO_OUT_OF_MEM;
         memcpy(*content, bootcat->content, bootcat->size);
     }
+    if (*content != NULL)
+        *size = bootcat->size;
     return 1;
 }