Test suites of other projects (mocha) that include v1.5.0 fail with error: "Error: global leak detected: existingPrefixes"

Author: troyfactor4

lib/signed-xml.js

@@ -713,7 +713,7 @@ SignedXml.prototype.computeSignature = function(xml, opts, callback) {
   prefix = opts.prefix;
   attrs = opts.attrs || {};
   location = opts.location || {};
-  existingPrefixes = opts.existingPrefixes || {};
+  var existingPrefixes = opts.existingPrefixes || {};
   // defaults to the root node
   location.reference = location.reference || "/*";
   // defaults to append action
@@ -1017,4 +1017,4 @@ SignedXml.prototype.getOriginalXmlWithIds = function() {
 
 SignedXml.prototype.getSignedXml = function() {
   return this.signedXml
-}
+}