fix: calculate block size correctly (trufflesuite#790)

fixes trufflesuite#787

src/chains/ethereum/utils/src/things/runtime-block.ts

@@ -76,11 +76,15 @@ export class Block {
  const deserialized = (rlpDecode(serialized) as any) as [
  Buffer[],
  Buffer[][],
+ Buffer[],
  Buffer
  ];
  this._raw = deserialized[0];
  this._rawTransactions = deserialized[1];
- const totalDifficulty = deserialized[2];
+ // TODO: support actual uncle data (needed for forking!)
+ // Issue: https:/trufflesuite/ganache-core/issues/786
+ // const uncles = deserialized[1];
+ const totalDifficulty = deserialized[3];
  this.header = makeHeader(this._raw, totalDifficulty);
  this._size = getBlockSize(serialized, totalDifficulty);
  }
@@ -220,9 +224,12 @@ export class RuntimeBlock {
  Buffer.allocUnsafe(32).fill(0), // mixHash
  Buffer.allocUnsafe(8).fill(0) // nonce
  ];
+ // TODO: support actual uncle data (needed for forking!)
+ // Issue: https:/trufflesuite/ganache-core/issues/786
+ const uncles = [];
  const { totalDifficulty } = header;
  const rawTransactions = transactions.map(tx => tx.raw);
- const raw = [rawHeader, rawTransactions, totalDifficulty];
+ const raw = [rawHeader, rawTransactions, uncles, totalDifficulty];
 
  const serialized = rlpEncode(raw);