Fix default 'account get' output. (#77)

The current code throws an exception if no address is specified.  It is supposed to return the current account info.

Reviewed-on: cerc-io/laconic-registry-cli#77
Reviewed-by: David Boreham <dboreham@noreply.git.vdb.to>
Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com>
Co-committed-by: Thomas E Lackey <telackey@bozemanpass.com>

src/cmds/registry-cmds/account-cmds/get.ts

@@ -18,7 +18,9 @@ export const handler = async (argv: Arguments) => {
   assert(chainId, 'Invalid registry Chain ID.');
 
   if (!address && privateKey) {
-    address = new Account(Buffer.from(privateKey, 'hex')).address;
+    const account = new Account(Buffer.from(privateKey, 'hex'));
+    await account.init();
+    address = account.address;
   }
 
   const registry = new Registry(gqlEndpoint, rpcEndpoint, chainId);