Fixed linter errors;

Author: Neurone

test/index.js

@@ -611,10 +611,10 @@ describe('message sig', function () {
       s: s
     })
     assert.deepEqual(ethUtils.fromRpcSig('0x99e71a99cb2270b8cac5254f9e99b6210c6c10224a1579cf389ef88b20a1abe9129ff05af364204442bdb53ab6f18a99ab48acc9326fa689f228040429e3ca6600'), {
-        v: 27,
-        r: r,
-        s: s
-      })
+      v: 27,
+      r: r,
+      s: s
+    })
   })
 
   it('should throw on invalid length', function () {