Image Magick has a Memory Leak in coders/ashlar.c

Description

```bash
==78968== Memcheck, a memory error detector
==78968== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al.
==78968== Using Valgrind-3.22.0 and LibVEX; rerun with -h for copyright info
==78968== 
==78968== HEAP SUMMARY:
==78968==     in use at exit: 17,232 bytes in 4 blocks
==78968==   total heap usage: 4,781 allocs, 4,777 frees, 785,472 bytes allocated

References

• ImageMagick/ImageMagick security advisory · WEB
• nvd.nist.gov/vuln/detail/CVE-2026-25969 · ADVISORY
• ImageMagick/ImageMagick commit a253d1b · WEB
• ImageMagick/ImageMagick · PACKAGE
• dlemstra/Magick.NET release 14.10.3 · WEB

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