module: ignore module path after null character

Null char as the first char as the path component
of first argument of require causes a node crash.
Ignoring null and all chars after that in require path.

Fixes: nodejs#13787

lib/module.js

@@ -510,6 +510,8 @@ Module.prototype.load = function(filename) {
 Module.prototype.require = function(path) {
   assert(path, 'missing path');
   assert(typeof path === 'string', 'path must be a string');
+  // Ignore part of the path after null character if it exists
+  path = path.split('\u0000')[0];
   return Module._load(path, this, /* isMain */ false);
 };
 

test/parallel/test-require-exceptions.js

@@ -33,10 +33,11 @@ assert.throws(function() {
   require(`${common.fixturesDir}/throws_error`);
 }, /^Error: blah$/);
 
-// Requiring the module with null character
+// Requiring the module with null character in
+// path as first character of a component
 assert.throws(function() {
   require('../\u0000on');
-}, /^Error: blah$/); //TODO: Fix the acual error
+}, /^Error: Cannot find module '[.]{2}\/'$/);
 
 // Requiring a module that does not exist should throw an
 // error with its `code` set to MODULE_NOT_FOUND