test: fix variable redeclarations

I'm a fan of small changesets, but even I'm getting a little annoyed at
me for opening all these PRs weeding out variable redeclarations. So I'm
bundling a bunch of small changes here.

PR-URL: https://github.com/nodejs/node/pull/4992
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 20 insertions, 17 deletions

diff --git a/test/parallel/test-querystring.js b/test/parallel/test-querystring.js
index f30d0a3cb2..b438885249 100644
--- a/test/parallel/test-querystring.js
+++ b/test/parallel/test-querystring.js
@@ -148,29 +148,32 @@ assert.strictEqual('foo=', qs.stringify({ foo: NaN }));
 assert.strictEqual('foo=', qs.stringify({ foo: Infinity }));
 
 // nested
-var f = qs.stringify({
-  a: 'b',
-  q: qs.stringify({
-    x: 'y',
-    y: 'z'
-  })
-});
-assert.equal(f, 'a=b&q=x%3Dy%26y%3Dz');
+{
+  const f = qs.stringify({
+    a: 'b',
+    q: qs.stringify({
+      x: 'y',
+      y: 'z'
+    })
+  });
+  assert.equal(f, 'a=b&q=x%3Dy%26y%3Dz');
+}
 
 assert.doesNotThrow(function() {
   qs.parse(undefined);
 });
 
 // nested in colon
-var f = qs.stringify({
-  a: 'b',
-  q: qs.stringify({
-    x: 'y',
-    y: 'z'
-  }, ';', ':')
-}, ';', ':');
-assert.equal(f, 'a:b;q:x%3Ay%3By%3Az');
-
+{
+  const f = qs.stringify({
+    a: 'b',
+    q: qs.stringify({
+      x: 'y',
+      y: 'z'
+    }, ';', ':')
+  }, ';', ':');
+  assert.equal(f, 'a:b;q:x%3Ay%3By%3Az');
+}
 
 assert.deepEqual({}, qs.parse());