Fixing ENS input entry in send flow (#10923)

* Fixing ENS input entry in send flow

Fixes MetaMask/metamask-extension#10691

* removed unnecessary apostrophe

ui/app/helpers/utils/util.js

@@ -83,6 +83,9 @@ export function isValidAddress(address) {
     return false;
   }
   const prefixed = addHexPrefix(address);
+  if (!isHex(prefixed)) {
+    return false;
+  }
   return (
     (isAllOneCase(prefixed.slice(2)) && ethUtil.isValidAddress(prefixed)) ||
     ethUtil.isValidChecksumAddress(prefixed)

ui/app/pages/send/send-content/add-recipient/add-recipient.js

@@ -22,7 +22,7 @@ export function getToErrorObject(to, sendTokenAddress, chainId) {
   let toError = null;
   if (!to) {
     toError = REQUIRED_ERROR;
-  } else if (!isValidAddress(to)) {
+  } else if (!isValidAddress(to) && !isValidDomainName(to)) {
     toError = isDefaultMetaMaskChain(chainId)
       ? INVALID_RECIPIENT_ADDRESS_ERROR
       : INVALID_RECIPIENT_ADDRESS_NOT_ETH_NETWORK_ERROR;

ui/app/pages/send/send-content/add-recipient/ens-input.component.js

@@ -314,7 +314,7 @@ export default class EnsInput extends Component {
     }
 
     if (ensFailure) {
-      return <i className="fa fa-warning fa-lg warning'" />;
+      return <i className="fa fa-warning fa-lg warning" />;
     }
 
     if (ensResolution && ensResolution !== ZERO_ADDRESS) {