Add var statements to undeclared variables and remove unused variables

benches/stress/codec.js

@@ -5,14 +5,4 @@ var json = {
 	decode: JSON.parse
 };
 
-var MsgPack = require('node-msgpack');
-msgpack = {
-	encode: MsgPack.pack,
-	decode: function(str) { return MsgPack.unpack(new Buffer(str)); }
-};
-
-bison = require('bison');
-
 module.exports = json;
-//module.exports = msgpack;
-//module.exports = bison;

diff_multi_bench_output.js

@@ -37,8 +37,8 @@ before_lines.forEach(function(b, i) {
         return;
     }
 
-    b_words = b.split(' ').filter(is_whitespace);
-    a_words = a.split(' ').filter(is_whitespace);
+    var b_words = b.split(' ').filter(is_whitespace);
+    var a_words = a.split(' ').filter(is_whitespace);
 
     var ops =
         [b_words, a_words]