Fix sending next queued websocket notification.
Fix sending next queued websocket notification.

decred/dcrwallet,btcsuite/btcwallet,Stash-Crypto/btcwallet,btcsuite/btcwallet,decred/dcrwallet,synrg-labs/btcwallet,Roasbeef/btcwallet,jrick/btcwallet,Roasbeef/btcwallet,Stash-Crypto/btcwallet,synrg-labs/btcwallet,jrick/dcrwallet,jrick/dcrwallet,jrick/btcwallet