Merge #1264: fix(example_electrum): init LocalChain from genesis

5b77942 fix(example_electrum): init LocalChain from genesis (vmammal)

Pull request description:

  <!-- You can erase any parts of this template not applicable to your Pull Request. -->

  ### Description

  <!-- Describe the purpose of this PR, what's being adding and/or fixed -->

  This should fix #1252

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  evanlinjin:
    ACK 5b77942

Tree-SHA512: bf049edb2ba22abb949dfd4cb38608589287f3f374f397c82f778b59c21010daa80b63ad85c442c4ee00a2608f89a8d50447b0db85d15caac7fd0b4fd8956e1a

Author: evanlinjin

example-crates/example_electrum/src/main.rs

@@ -5,7 +5,7 @@ use std::{
 };
 
 use bdk_chain::{
-    bitcoin::{Address, Network, OutPoint, ScriptBuf, Txid},
+    bitcoin::{constants::genesis_block, Address, Network, OutPoint, ScriptBuf, Txid},
     indexed_tx_graph::{self, IndexedTxGraph},
     keychain,
     local_chain::{self, LocalChain},
@@ -112,7 +112,12 @@ fn main() -> anyhow::Result<()> {
         graph
     });
 
-    let chain = Mutex::new(LocalChain::from_changeset(disk_local_chain)?);
+    let chain = Mutex::new({
+        let genesis_hash = genesis_block(args.network).block_hash();
+        let (mut chain, _) = LocalChain::from_genesis_hash(genesis_hash);
+        chain.apply_changeset(&disk_local_chain)?;
+        chain
+    });
 
     let electrum_cmd = match &args.command {
         example_cli::Commands::ChainSpecific(electrum_cmd) => electrum_cmd,