SIGSEGV on HSCAN when field has a TTL

[tyrantlink]

To Reproduce
Steps to reproduce the behavior:

1. Insert and set TTL

HSET key field value
HEXPIRE key 120 FIELDS 1 field

2. Call HSCAN

HSCAN key 0 match * count 500

3. Dragonfly immediately crashes

*** SIGSEGV received at time=1742383416 on cpu 7 ***
PC: @     0x5564fa454908  (unknown)  std::_Function_handler<>::_M_invoke()

Expected behavior
HSCAN returns normal value, in the example case,

1) "0"
2) 1) "field"
   2) "value"

Environment (please complete the following information):

• OS: Fedora Linux 41
• Kernel: 6.13.6-200.fc41.x86_64
• Containerized?: Podman (Docker)
• Dragonfly Version: Latest (1.28.0)

Reproducible Code Snippet

HSET key field value
HEXPIRE key 120 FIELDS 1 field
HSCAN key 0 match * count 500

Additional context
Notably, Redis Insight will call HSCAN when viewing a hash, so simply viewing a hash that has ttl fields will cause dragonfly to crash.

[adiholden]

@tyrantlink thank you for reporting this