test: add callback to fs.close() in test-fs-stat

To avoid '[DEP0013] DeprecationWarning:
Calling an asynchronous function without callback is deprecated.'

PR-URL: #12804
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Santiago Gimeno <[email protected]>
Reviewed-By: Yuta Hiroto <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>

Author: vsemozhetbyt

test/parallel/test-fs-stat.js

@@ -28,7 +28,7 @@ fs.open('.', 'r', undefined, common.mustCall(function(err, fd) {
   fs.fstat(fd, common.mustCall(function(err, stats) {
     assert.ifError(err);
     assert.ok(stats.mtime instanceof Date);
-    fs.close(fd);
+    fs.close(fd, assert.ifError);
     assert.strictEqual(this, global);
   }));
 
@@ -47,7 +47,7 @@ fs.open('.', 'r', undefined, common.mustCall(function(err, fd) {
     console.dir(stats);
     assert.ok(stats.mtime instanceof Date);
   }
-  fs.close(fd);
+  fs.close(fd, assert.ifError);
 }));
 
 console.log(`stating:  ${__filename}`);