add failing test

javascript/ql/test/query-tests/Security/CWE-915/PrototypePollutingAssignment/sublib/other.js

@@ -0,0 +1,11 @@
+(function () {
+  function Foobar() {}
+
+  Foobar.prototype = {
+    method: function (obj, path, value) {
+      obj[path[0]][path[1]] = value; // NOT OK - but not flagged [INCONSISTENCY]
+    },
+  };
+
+  module.exports.foobar = Foobar;
+})();

javascript/ql/test/query-tests/Security/CWE-915/PrototypePollutingAssignment/sublib/sub.js

@@ -1,3 +1,6 @@
 module.exports.set = function (obj, path, value) {
   obj[path[0]][path[1]] = value; // NOT OK
-}
+}
+
+var other = require('./other')
+exports.foobar = other.foobar;