[BUG] Memory address is accessed after it's free'd

[xiaocj]

Describe the bug

Run the tairhash test cases with valgrind. The error is very likely to be triggered.

To reproduce

"./runtest --valgrind --single unit/tairhash"

Expected behavior

==50975== Invalid read of size 8
==50975== at 0x6FF7B18: passiveExpire (scan_algorithm.c:253)
==50975== by 0x6FFAC53: TairHashTypeHset_RedisCommand (tairhash.c:734)
==50975== by 0x6FFAC53: TairHashTypeHset_RedisCommand (tairhash.c:722)
==50975== by 0x274855: ValkeyModuleCommandDispatcher (module.c:1006)
==50975== by 0x19CD13: call (server.c:3739)
==50975== by 0x19E9CF: processCommand (server.c:4362)
==50975== by 0x1BFB34: processCommandAndResetClient (networking.c:3047)
==50975== by 0x1BFE4C: processInputBuffer (networking.c:3175)
==50975== by 0x1C02C0: readQueryFromClient (networking.c:3280)
==50975== by 0x2B8F09: callHandler (connhelpers.h:79)
==50975== by 0x2B9724: connSocketEventHandler (socket.c:300)
==50975== by 0x1857C6: aeProcessEvents (ae.c:486)
==50975== by 0x185A04: aeMain (ae.c:543)
==50975== Address 0x88b9838 is 24 bytes inside a block of size 40 free'd
==50975== at 0x484988F: free (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==50975== by 0x1AC449: zfree_internal (zmalloc.c:399)
==50975== by 0x1AC486: valkey_free (zmalloc.c:414)
==50975== by 0x27375C: VM_Free (module.c:590)
==50975== by 0x7005A93: m_zslFreeNode (skiplist.c:43)
==50975== by 0x7005A93: m_zslDelete (skiplist.c:176)
==50975== by 0x6FF7DC9: deleteAndPropagate (scan_algorithm.c:294)
==50975== by 0x6FFAB91: fieldExpireIfNeeded (tairhash.c:298)
==50975== by 0x6FF7B4D: passiveExpire (scan_algorithm.c:243)
==50975== by 0x6FFAC53: TairHashTypeHset_RedisCommand (tairhash.c:734)
==50975== by 0x6FFAC53: TairHashTypeHset_RedisCommand (tairhash.c:722)
==50975== by 0x274855: ValkeyModuleCommandDispatcher (module.c:1006)
==50975== by 0x19CD13: call (server.c:3739)
==50975== by 0x19E9CF: processCommand (server.c:4362)
==50975== Block was alloc'd at
==50975== at 0x4846828: malloc (in /usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==50975== by 0x1ABC91: ztrymalloc_usable_internal (zmalloc.c:155)
==50975== by 0x1ABE07: zmalloc_usable (zmalloc.c:199)
==50975== by 0x273667: VM_Alloc (module.c:552)
==50975== by 0x7005741: m_zslCreateNode (skiplist.c:12)
==50975== by 0x7005741: m_zslInsert (skiplist.c:104)
==50975== by 0x6FFB4DD: TairHashTypeHset_RedisCommand (tairhash.c:882)
==50975== by 0x6FFB4DD: TairHashTypeHset_RedisCommand (tairhash.c:722)
==50975== by 0x274855: ValkeyModuleCommandDispatcher (module.c:1006)
==50975== by 0x19CD13: call (server.c:3739)
==50975== by 0x19E9CF: processCommand (server.c:4362)
==50975== by 0x1BFB34: processCommandAndResetClient (networking.c:3047)
==50975== by 0x1BFE4C: processInputBuffer (networking.c:3175)
==50975== by 0x1C02C0: readQueryFromClient (networking.c:3280)