fix segfault in storage/groups handler

[adameat]

Changelog entry

fix segfault in storage/groups handler

Changelog category

• Bugfix

Description for reviewers

closes #14568

[github-actions]

⚪ 2025-02-17 04:48:07 UTC Pre-commit check linux-x86_64-release-asan for ecf29cd has started.
⚪ 2025-02-17 04:48:18 UTC Artifacts will be uploaded here
⚪ 2025-02-17 04:51:05 UTC ya make is running...
🟡 2025-02-17 06:06:44 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
11465	11385	0	36	10	34

⚪ 2025-02-17 06:09:15 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-02-17 06:21:39 UTC Tests successful.

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
124 (only retried tests)	88	0	0	2	34

🟢 2025-02-17 06:21:45 UTC Build successful.
🟢 2025-02-17 06:22:13 UTC ydbd size 3.6 GiB changed* by +23.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 7c2a68c	merge: ecf29cd	diff	diff %
ydbd size	3 889 415 240 Bytes	3 889 438 936 Bytes	+23.1 KiB	+0.001%
ydbd stripped size	1 361 429 552 Bytes	1 361 434 096 Bytes	+4.4 KiB	+0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-02-17 04:48:32 UTC Pre-commit check linux-x86_64-relwithdebinfo for ecf29cd has started.
⚪ 2025-02-17 04:54:19 UTC Artifacts will be uploaded here
⚪ 2025-02-17 04:57:05 UTC ya make is running...
🟢 2025-02-17 05:44:18 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
18549	17199	0	0	1216	134

🟢 2025-02-17 05:45:48 UTC Build successful.
🟢 2025-02-17 05:46:05 UTC ydbd size 2.1 GiB changed* by +12.5 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: 7c2a68c	merge: ecf29cd	diff	diff %
ydbd size	2 235 932 952 Bytes	2 235 945 704 Bytes	+12.5 KiB	+0.001%
ydbd stripped size	473 766 104 Bytes	473 765 848 Bytes	-256 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}