Fix the "unaligned 64-bit atomic operation" panic

[fcostaoliveira]

Fixes:

2025-03-19T15:13:48.1362281Z 2025/03/19 15:13:46 ftsb (git_sha1:4bc7d02e8638a8b6446474f805869974a1e00d7b-dirty)
2025-03-19T15:13:48.1363406Z setup writes/sec          writes/sec         updates/sec           reads/sec    cursor reads/sec         deletes/sec     current ops/sec           total ops             TX BW/sRX BW/s
2025-03-19T15:13:48.1364421Z panic: unaligned 64-bit atomic operation
2025-03-19T15:13:48.1364882Z 
2025-03-19T15:13:48.1365066Z goroutine 72 [running]:
2025-03-19T15:13:48.1365534Z internal/runtime/atomic.panicUnaligned()
2025-03-19T15:13:48.1366172Z /snap/go/10866/src/internal/runtime/atomic/unaligned.go:8 +0x24
2025-03-19T15:13:48.1366839Z internal/runtime/atomic.Xadd64(0x4f96d4, 0x0)
2025-03-19T15:13:48.1367495Z /snap/go/10866/src/internal/runtime/atomic/atomic_arm.s:318 +0x14
2025-03-19T15:13:48.1368889Z github.com/RediSearch/ftsb/benchmark_runner.(*BenchmarkRunner).work(0x4f95a8, {0x36ef44, 0x503a00}, 0x1c0e280, 0x1c1e290, 0x2a, 0x1c7c0a0, 0x0)
2025-03-19T15:13:48.1370028Z /home/fco/redislabs/ftsb/benchmark_runner/benchmark_runner.go:424 +0x25c
2025-03-19T15:13:48.1370993Z created by github.com/RediSearch/ftsb/benchmark_runner.(*BenchmarkRunner).RunBenchmark in goroutine 1
2025-03-19T15:13:48.1371963Z /home/fco/redislabs/ftsb/benchmark_runner/benchmark_runner.go:316 +0x148
2025-03-19T15:13:48.1372450Z 

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud