zip: fix typo in zip64.

Author: ctalkington

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

@@ -235,7 +235,7 @@ ZipArchiveOutputStream.prototype._writeCentralDirectoryZip64 = function() {
   // not implemented at this time
 
   // end of central directory locator
-  this.write(zipUtil.getLongBytes(costants.SIG_ZIP64_EOCD_LOC));
+  this.write(zipUtil.getLongBytes(constants.SIG_ZIP64_EOCD_LOC));
 
   // disk number holding the ZIP64 EOCD record
   this.write(constants.LONG_ZERO);