catch lbrynet error api/claim/get

[jessopb]

In api/claim/get/index.js
let lbrynetResult = await getClaim(${name}#${claimId});
If this is returned:
{ error: 'Failed to resolve stream at lbry://hello#3ddd4f08ef7aeaf04d530615a68acf6bf2fd6cb5' }
It does not register as an error. Catch it.