Version should be written as an int, not a long (#17)

The version field is an integer. It is read in as an integer. Mistakenly, it is written as a long.

Signed-off-by: Peter  Robinson <drinkcoffee@eml.cc>

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/worldstate/StateTrieAccountValue.java

@@ -100,7 +100,7 @@ public class StateTrieAccountValue {
 
     if (version != Account.DEFAULT_VERSION) {
       // version of zero is never written out.
-      out.writeLongScalar(version);
+      out.writeIntScalar(version);
     }
 
     out.endList();