ReapedAcccount event is spammed when multiple transactions are placed in the same block

[shawntabrizi]

Take a look at Kusama CC-3 Block here:
https://polkadot.js.org/apps/#/explorer/query/0x3cf167740da9aac3559a95247cb015d2324fd259e9a12da570a8b782bca04909

In this block, a user submits multiple transactions which transfers their full balance. All but the first transaction failed (good).

However, you can see that the ReapedAccount event was emitted multiple times, when it should only really be emitted once here.

We should improve this.

[dud1337]

After discussion with @laboon, this issue appears to be related to a negative "Active Accounts" integer on https://polkascan.io/pre/kusama-cc3

[shawntabrizi]

@dud1337 indeed, that along with the fact that Kusama had zero fees for a while, so any account with zero nonce and zero value could submit a transaction and that would also trigger the ReapedAccount event.

Not sure if there is a good solution to this for situations where there are no fees.