c-deps: bump rocksdb for safer LSM invariant checks

[ajkr]

Picks up cockroachdb/rocksdb#49.

Release note: None

[cockroach-teamcity]

This change is 

[petermattis]

Don't we need to enable force_consistency_checks for this to have any effect?

[ajkr]

Yes, I was planning to do it separately, though.

[petermattis]

Yes, I was planning to do it separately, though.

🤷‍♂an extra bors pass wouldn't be my choice.

[ajkr]

They are somewhat independent - force_consistency_checks can be enabled with or without this PR. Without this PR it's less ideal because it prints to stderr then abort()s. That's less ideal than continuing and returning an error because buffered log messages will be lost (which are likely the ones describing the current compaction) and idk if the stderr is captured anywhere. At the same time, without this PR force_consistency_checks should still be effective in preventing the DB from going into a corrupt state.

[petermattis]

Oops, didn't mean to hold up approval.

[ajkr]

Plus doing it separately allows us to backport it to release-19.1 and release-2.1 using the backport tool, which we couldn't do if it includes a RocksDB version bump. Idk, I am also suffering from clicking around PRs too much, but can tolerate it for a little while longer.

[ajkr]

bors r+

[craig]

Build succeeded

• GitHub CI (Cockroach)