message: Remove an apparently unnecessary conversion
  CScript -> CScriptID -> ScriptHash is unnecessary because
  ScriptHash and CScriptID do the same thing.
diff: @@ -283,7 +283,7 @@ UniValue importaddress(const JSONRPCRequest& request)
  pwallet->ImportScripts(scripts, 0 /* timestamp */);
  if (fP2SH) {
  - scripts.insert(GetScriptForDestination(ScriptHash(CScriptID(redeem_script))));
  + scripts.insert(GetScriptForDestination(ScriptHash(redeem_script)));
  }
  pwallet->ImportScriptPubKeys(strLabel, scripts, false /* have_solving_data */, true /* apply_label */, 1 /* timestamp */);
  