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]

🟢 2025-03-26 15:38:30 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-03-26 15:38:35 UTC Pre-commit check linux-x86_64-relwithdebinfo for 6cff871 has started.
⚪ 2025-03-26 15:38:50 UTC Artifacts will be uploaded here
⚪ 2025-03-26 15:41:06 UTC ya make is running...
🟡 2025-03-26 16:12:37 UTC Some tests failed, follow the links below. Going to retry failed tests...

Details

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
1095	1081	0	1	8	5

⚪ 2025-03-26 16:12:52 UTC ya make is running... (failed tests rerun, try 2)
🟢 2025-03-26 16:20:40 UTC Tests successful.

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
16 (only retried tests)	14	0	0	0	2

🟢 2025-03-26 16:20:50 UTC Build successful.
🟢 2025-03-26 16:21:04 UTC ydbd size 2.2 GiB changed* by +21.1 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: cb28e2e	merge: 6cff871	diff	diff %
ydbd size	2 342 840 728 Bytes	2 342 862 368 Bytes	+21.1 KiB	+0.001%
ydbd stripped size	489 905 088 Bytes	489 908 992 Bytes	+3.8 KiB	+0.001%

^{*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]

⚪ 2025-03-26 15:38:38 UTC Pre-commit check linux-x86_64-release-asan for 6cff871 has started.
⚪ 2025-03-26 15:38:53 UTC Artifacts will be uploaded here
⚪ 2025-03-26 15:41:16 UTC ya make is running...
🟡 2025-03-26 16:11:55 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Details

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
664	642	0	7	6	9

⚪ 2025-03-26 16:12:06 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-03-26 16:31:41 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Details

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
24 (only retried tests)	10	0	4	2	8

⚪ 2025-03-26 16:31:52 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-03-26 16:43:21 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?
18 (only retried tests)	5	0	4	1	8

🟢 2025-03-26 16:43:30 UTC Build successful.
🟢 2025-03-26 16:43:47 UTC ydbd size 3.8 GiB changed* by +43.3 KiB, which is < 100.0 KiB vs main: OK

ydbd size dash	main: cb28e2e	merge: 6cff871	diff	diff %
ydbd size	4 110 766 640 Bytes	4 110 810 992 Bytes	+43.3 KiB	+0.001%
ydbd stripped size	1 420 472 744 Bytes	1 420 488 808 Bytes	+15.7 KiB	+0.001%

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