node/cmd: ChainID uint8 -> uint16

This was changed in v2 and not yet updated here.

Change-Id: Ia35a5a025df0b096f3f94137ef291c458d726bc6

node/cmd/guardiand/adminserver.go

@@ -77,7 +77,7 @@ func adminContractUpgradeToVAA(req *nodev1.ContractUpgrade, guardianSetIndex uin
 		return nil, errors.New("invalid new_contract address")
 	}
 
-	if req.ChainId > math.MaxUint8 {
+	if req.ChainId > math.MaxUint16 {
 		return nil, errors.New("invalid chain_id")
 	}
 
@@ -96,7 +96,7 @@ func adminContractUpgradeToVAA(req *nodev1.ContractUpgrade, guardianSetIndex uin
 // tokenBridgeRegisterChain converts a nodev1.TokenBridgeRegisterChain message to its canonical VAA representation.
 // Returns an error if the data is invalid.
 func tokenBridgeRegisterChain(req *nodev1.BridgeRegisterChain, guardianSetIndex uint32, nonce uint32, sequence uint64) (*vaa.VAA, error) {
-	if req.ChainId > math.MaxUint8 {
+	if req.ChainId > math.MaxUint16 {
 		return nil, errors.New("invalid chain_id")
 	}