benchmark: refactor to eliminate redeclared vars

In order to comply with linting rules used in the rest of the code base,
eliminate redeclared variables. A conservative approach is used so as to
avoid unintentional performance issues (for example, as might be seen in
some situations when using `let` instead of `var`).

PR-URL: https://github.com/nodejs/node/pull/5468
Reviewed-By: Brian White <mscdex@mscdex.net>

1 files changed, 5 insertions, 4 deletions

diff --git a/benchmark/crypto/cipher-stream.js b/benchmark/crypto/cipher-stream.js
index affed1b462..5da6f2481e 100644
--- a/benchmark/crypto/cipher-stream.js
+++ b/benchmark/crypto/cipher-stream.js
@@ -86,13 +86,14 @@ function streamWrite(alice, bob, message, encoding, writes) {
 
 function legacyWrite(alice, bob, message, encoding, writes) {
   var written = 0;
+  var enc, dec;
   for (var i = 0; i < writes; i++) {
-    var enc = alice.update(message, encoding);
-    var dec = bob.update(enc);
+    enc = alice.update(message, encoding);
+    dec = bob.update(enc);
     written += dec.length;
   }
-  var enc = alice.final();
-  var dec = bob.update(enc);
+  enc = alice.final();
+  dec = bob.update(enc);
   written += dec.length;
   dec = bob.final();
   written += dec.length;