From: Guido U. Draheim <guidod@gmx.de>
Date: Sun, 4 Aug 2019 18:00:21 +0000 (+0200)
Subject: Merge pull request #66 from imartisko/master
X-Git-Tag: v0.13.70~2^2~10
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=89d623631b68e7d5c3fd3cedb85754138d0f7931;p=zziplib

Merge pull request #66 from imartisko/master

fseeko.c: fix possible double free of buffer
---

diff --git a/zzip/fseeko.c b/zzip/fseeko.c
index ac66784..3b3145e 100644
--- a/zzip/fseeko.c
+++ b/zzip/fseeko.c
@@ -420,6 +420,7 @@ zzip_entry_findfirst(FILE * disk)
             if (zzip_disk_entry_check_magic(entry))
             {
                 free(buffer);
+                buffer = NULL;
                 entry->headseek = root;
                 entry->diskfile = disk;
                 entry->disksize = disksize;
@@ -450,7 +451,8 @@ zzip_entry_findfirst(FILE * disk)
     }
     errno = ENOENT; /* not found */
   error2:
-    free(buffer);
+    if (buffer != NULL)
+       free(buffer);
   error1:
     free(entry);
     ____;