Fix using uninitialized value error.

[dcherednik]

#7009

[github-actions]

⚪ 2024-07-24 08:21:27 UTC Pre-commit check for 527b466 has started.
⚪ 2024-07-24 08:24:03 UTC Build+Tests linux-x86_64-release-asan is running...
🟢 2024-07-24 10:26:12 UTC Build successful.
🔴 2024-07-24 10:30:07 UTC Some tests failed, follow the links below.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
9614	9015	0	99	325	175

🟢 2024-07-24 10:30:59 UTC ydbd size 5.2 GiB changed* by -2.2 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 286f4d0	merge: 527b466	diff	diff %
ydbd size	5 556 170 128 Bytes	5 556 167 840 Bytes	-2.2 KiB	-0.000%
ydbd stripped size	1 196 800 880 Bytes	1 196 800 240 Bytes	-640 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]

⚪ 2024-07-24 08:24:21 UTC Pre-commit check for 527b466 has started.
⚪ 2024-07-24 08:27:01 UTC Build+Tests linux-x86_64-relwithdebinfo is running...
🟢 2024-07-24 09:54:09 UTC Build successful.
🔴 2024-07-24 09:56:07 UTC Some tests failed, follow the links below.

Test history | Ya make output

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
13759	12419	0	4	1325	11

🟢 2024-07-24 09:57:00 UTC ydbd size 8.1 GiB changed* by -7.3 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 286f4d0	merge: 527b466	diff	diff %
ydbd size	8 652 702 320 Bytes	8 652 694 848 Bytes	-7.3 KiB	-0.000%
ydbd stripped size	471 060 832 Bytes	471 060 256 Bytes	-576 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]

⚪ 2024-07-24 08:24:30 UTC Pre-commit check for 527b466 has started.
⚪ 2024-07-24 08:27:07 UTC Build+Tests linux-x86_64-release-clang14 is running...
🟢 2024-07-24 08:53:27 UTC Build successful.