Avoid accounts destroyed in payments from being aux (#318)

substrate/polkadot/service/src/chain_spec.rs

@@ -93,11 +93,7 @@ fn staging_testnet_config_genesis() -> GenesisConfig {
 
 /// Staging testnet config.
 pub fn staging_testnet_config() -> ChainSpec<GenesisConfig> {
-	let boot_nodes = vec![
-		"enode://a93a29fa68d965452bf0ff8c1910f5992fe2273a72a1ee8d3a3482f68512a61974211ba32bb33f051ceb1530b8ba3527fc36224ba6b9910329025e6d9153cf50@104.211.54.233:30333".into(),
-		"enode://051b18f63a316c4c5fef4631f8c550ae0adba179153588406fac3e5bbbbf534ebeda1bf475dceda27a531f6cdef3846ab6a010a269aa643a1fec7bff51af66bd@104.211.48.51:30333".into(),
-		"enode://c831ec9011d2c02d2c4620fc88db6d897a40d2f88fd75f47b9e4cf3b243999acb6f01b7b7343474650b34eeb1363041a422a91f1fc3850e43482983ee15aa582@104.211.48.247:30333".into(),
-	];
+	let boot_nodes = vec![];
 	ChainSpec::from_genesis("Staging Testnet", staging_testnet_config_genesis, boot_nodes)
 }
 

substrate/substrate/runtime/staking/src/lib.rs

@@ -876,7 +876,7 @@ impl<T: Trait> MakePayment<T::AccountId> for Module<T> {
 	fn make_payment(transactor: &T::AccountId, encoded_len: usize) -> Result {
 		let b = Self::free_balance(transactor);
 		let transaction_fee = Self::transaction_base_fee() + Self::transaction_byte_fee() * <T::Balance as As<u64>>::sa(encoded_len as u64);
-		if b < transaction_fee {
+		if b < transaction_fee + Self::existential_deposit() {
 			return Err("not enough funds for transaction fee");
 		}
 		<FreeBalance<T>>::insert(transactor, b - transaction_fee);