Don't log false-positive "failed to send subscription notification"

[marcospb19-cw]

when the log reason is 'Closed(...)'

log reason:

Closed(SubscriptionMessage(NeedsData("{\"address\":\"0xa9a55a81a4c085ec0c31585aed4cfb09d78dfd53\",\"topics\":[\"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef\",\"0x0000000000000000000000000000000000000000000000000000000000000000\",\"0x000000000000000000000000b7d5a035a202597f0e04efb3406be4a952e927da\"],\"data\":\"0x0000000000000000000000000000000000000000000000000000000001d27610\",\"blockHash\":\"0xc322c18b2654616593b980b47d92b75ce72a8be177642c151d03b95f3e1010ee\",\"blockNumber\":\"0x4ea4d52\",\"transactionHash\":\"0x4392b2f033561eb7ac4f8b92853ffe9d8a325e3bf016177642bdd081226b9bd4\",\"transactionIndex\":\"0x26\",\"logIndex\":\"0x94\",\"removed\":false}")))

stratus/src/eth/rpc/rpc_subscriptions.rs

Line 268 in 7ddf373

tracing::error!(reason = ?e, "failed to send subscription notification");