Commit 4e2313a for zlib

commit 4e2313a68804e685c3fee6e60228454309de017c
Author: Mark Adler <git@madler.net>
Date:   Sun Oct 25 23:31:11 2026 -0700

    Check for zipOpenNewFileInZip4_64 allocation failure before use.

    The central header was allocated and then written to before
    checking whether the allocation succeeded. Move the check to right
    after the allocation.

diff --git a/contrib/minizip/zip.c b/contrib/minizip/zip.c
index 6dfd99e..1d1e406 100644
--- a/contrib/minizip/zip.c
+++ b/contrib/minizip/zip.c
@@ -1401,6 +1401,8 @@ extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char* filename, c
     zi->ci.size_centralExtraFree = 32; /* Extra space we have reserved in case we need to add ZIP64 extra info data */

     zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader + zi->ci.size_centralExtraFree);
+    if (zi->ci.central_header == NULL)
+        return ZIP_INTERNALERROR;

     zi->ci.size_centralExtra = size_extrafield_global;
     zip64local_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
@@ -1443,8 +1445,6 @@ extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file, const char* filename, c
     for (i=0;i<size_comment;i++)
         *(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
               size_extrafield_global+i) = *(comment+i);
-    if (zi->ci.central_header == NULL)
-        return ZIP_INTERNALERROR;

     zi->ci.zip64 = zip64;
     zi->ci.totalCompressedData = 0;