[Bug] iterator need to be validate after find of map

[Vallishp]

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• I had searched in the issues and found no similar issues.

Version

master

What's Wrong?

Based on the bug #32489 , reviewed master code.

After iterator returned by using find must be validated with map.end() before use.
CloudTxnDeleteBitmapCache::remove_expired_tablet_txn_info
auto txn_iter = _txn_map.find(iter->second);
if (iter->first == txn_iter->second.txn_expiration) {

What You Expected?

code should not have a access of iterator without checking map.end()

How to Reproduce?

No response

Anything Else?

fixed similar problems.

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct