Updated variable scope in legacy HTTP.js file

src/core/operations/legacy/HTTP.js

@@ -45,18 +45,18 @@ const HTTP = {
      * @returns {string}
     */
     runDechunk: function(input, args) {
-        var chunks = [];
-        var chunkSizeEnd = input.indexOf("\n") + 1;
-        var lineEndings = input.charAt(chunkSizeEnd - 2) == "\r" ? "\r\n" : "\n";
-        var lineEndingsLength = lineEndings.length;
-        var chunkSize = parseInt(input.slice(0, chunkSizeEnd), 16);
+        let chunks = [];
+        let chunkSizeEnd = input.indexOf("\n") + 1;
+        let lineEndings = input.charAt(chunkSizeEnd - 2) === "\r" ? "\r\n" : "\n";
+        let lineEndingsLength = lineEndings.length;
+        let chunkSize = parseInt(input.slice(0, chunkSizeEnd), 16);
         while (!isNaN(chunkSize)) {
             chunks.push(input.slice(chunkSizeEnd, chunkSize + chunkSizeEnd)); 
             input = input.slice(chunkSizeEnd + chunkSize + lineEndingsLength);
             chunkSizeEnd = input.indexOf(lineEndings) + lineEndingsLength;
             chunkSize = parseInt(input.slice(0, chunkSizeEnd), 16);
         }
-        return chunks.join('') + input;
+        return chunks.join("") + input;
     },
 
     /**