Only scan v2 Monero TXs

coins/monero/src/wallet/scan.rs

@@ -282,6 +282,11 @@ impl<O: Clone + Zeroize> Timelocked<O> {
 impl Scanner {
   /// Scan a transaction to discover the received outputs.
   pub fn scan_transaction(&mut self, tx: &Transaction) -> Timelocked<ReceivedOutput> {
+    // Only scan RCT TXs since we can only spend RCT outputs
+    if tx.version != 2 {
+      return Timelocked(tx.prefix.timelock, vec![]);
+    }
+
     let extra = Extra::read::<&[u8]>(&mut tx.prefix.extra.as_ref());
     let extra = if let Ok(extra) = extra {
       extra