zip: fix zip64 central directory record size and made by version.

Author: ctalkington

lib/archivers/zip/zip-archive-output-stream.js

@@ -211,10 +211,10 @@ ZipArchiveOutputStream.prototype._writeCentralDirectoryZip64 = function() {
   this.write(zipUtil.getLongBytes(constants.SIG_ZIP64_EOCD));
 
   // size of the ZIP64 EOCD record
-  this.write(zipUtil.getEightBytes((constants.SHORT * 2) + (constants.LONG * 2) + (8 * 4)));
+  this.write(zipUtil.getEightBytes(56));
 
   // version made by
-  this.write(zipUtil.getShortBytes((constants.PLATFORM_UNIX << 8) | constants.VERSION_MADEBY));
+  this.write(zipUtil.getShortBytes(constants.MIN_VERSION_ZIP64));
 
   // version to extract
   this.write(zipUtil.getShortBytes(constants.MIN_VERSION_ZIP64));