Fix ydb-cli vulnerabilities found by Coverity

[Alek5andr-Kotov]

Changelog entry

Added checks to calm down the analyzer.

Changelog category

• Not for changelog (changelog entry is not required)

Description for reviewers

...

[github-actions]

🟢 2025-02-27 08:56:07 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-02-27 08:56:11 UTC Pre-commit check linux-x86_64-relwithdebinfo for dd6ad36 has started.
⚪ 2025-02-27 08:56:25 UTC Artifacts will be uploaded here
⚪ 2025-02-27 08:58:42 UTC ya make is running...
🟢 2025-02-27 09:11:26 UTC Tests successful.

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
1049	1039	0	0	2	8

🟢 2025-02-27 09:11:39 UTC Build successful.
🟢 2025-02-27 09:11:48 UTC ydbd size 2.1 GiB changed* by 0 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 9ff271a	merge: dd6ad36	diff	diff %
ydbd size	2 285 054 040 Bytes	2 285 054 040 Bytes	0 Bytes	0.000%
ydbd stripped size	479 248 608 Bytes	479 248 608 Bytes	0 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}

[github-actions]

⚪ 2025-02-27 08:58:42 UTC Pre-commit check linux-x86_64-release-asan for dd6ad36 has started.
⚪ 2025-02-27 08:58:56 UTC Artifacts will be uploaded here
⚪ 2025-02-27 09:01:13 UTC ya make is running...
🟡 2025-02-27 09:14:08 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?
630	624	0	3	0	3

⚪ 2025-02-27 09:14:18 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-02-27 09:33:24 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 | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
5 (only retried tests)	2	0	2	0	1

⚪ 2025-02-27 09:33:32 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-02-27 09:38:13 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
4 (only retried tests)	2	0	1	0	1

🟢 2025-02-27 09:38:20 UTC Build successful.
🟢 2025-02-27 09:38:34 UTC ydbd size 3.7 GiB changed* by -96 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 9ff271a	merge: dd6ad36	diff	diff %
ydbd size	3 982 764 728 Bytes	3 982 764 632 Bytes	-96 Bytes	-0.000%
ydbd stripped size	1 387 224 552 Bytes	1 387 224 488 Bytes	-64 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}