Fix const to var

Author: Ruben Bridgewater

lib/parser.js

@@ -227,7 +227,7 @@ function parseType (parser, type) {
     case 45: // -
       return parseError(parser)
     default:
-      const err = new ReplyError('Protocol error, got ' + JSON.stringify(String.fromCharCode(type)) + ' as reply type byte', 20)
+      var err = new ReplyError('Protocol error, got ' + JSON.stringify(String.fromCharCode(type)) + ' as reply type byte', 20)
       err.offset = parser.offset
       err.buffer = JSON.stringify(parser.buffer)
       return handleError(parser, err)