[C++] ASAN CI job failed

[asfimport]

Log at https://github.com/apache/arrow/pull/11456/checks?check_run_id=3935325884

Managed to reproduce locally, looks it's related to test SeqMergedGeneratorTestFixture.ErrorItem.

$ cmake -GNinja -DARROW_JEMALLOC=OFF -DARROW_USE_ASAN=ON -DARROW_USE_UBSAN=ON -DCMAKE_BUILD_TYPE=debug -DARROW_BUILD_TESTS=ON -DCMAKE_CXX_COMPILER=/usr/bin/clang++-8 -DCMAKE_C_COMPILER=/usr/bin/clang-8 ..

$ ninja -j16

$ debug/arrow-utility-test --gtest_filter=SeqMergedGeneratorTestFixture.ErrorItem

Note: Google Test filter = SeqMergedGeneratorTestFixture.ErrorItem                                                                                                                                                        
......

==1177234==ERROR: LeakSanitizer: detected memory leaks

Indirect leak of 512 byte(s) in 1 object(s) allocated from:
......

SUMMARY: AddressSanitizer: 2944 byte(s) leaked in 25 allocation(s).

Reporter: Yibo Cai / @cyb70289
Assignee: Krisztian Szucs / @kszucs

PRs and other links:

• GitHub Pull Request #11460
• GitHub Pull Request #11461

_{Note: This issue was originally created as ARROW-14370. Please see the migration documentation for further details.}

[asfimport]

Yibo Cai / @cyb70289:
cc @westonpace

[asfimport]

Krisztian Szucs / @kszucs:
Issue resolved by pull request 11461
#11461