Minor cleanup of utxoset input checking

src/blockdata/utxoset.rs

@@ -253,11 +253,9 @@ impl UtxoSet {
       }
     }
 
-    let mut skipped_genesis = false;
-    for tx in block.txdata.iter() {
+    for tx in block.txdata.iter().skip(1) {
       let txid = tx.bitcoin_hash();
       // Put the removed utxos into the stxo cache, in case we need to rewind
-      if skipped_genesis {
       self.spent_txos.get_mut(spent_idx).reserve_additional(tx.input.len());
       for (n, input) in tx.input.iter().enumerate() {
         let taken = self.take_utxo(input.prev_hash, input.prev_index);
@@ -273,9 +271,6 @@ impl UtxoSet {
         }
       }
     }
-      skipped_genesis = true;
-
-    }
     // If we made it here, success!
     Ok(())
   }