lib: minor improvements to bootstrap_node.js

Change '==' to '==='

PR-URL: https://github.com/nodejs/node/pull/8906
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>

lib/internal/bootstrap_node.js

@@ -70,15 +70,15 @@
         NativeModule.require('_third_party_main');
       });
 
-    } else if (process.argv[1] == 'debug') {
+    } else if (process.argv[1] === 'debug') {
       // Start the debugger agent
       NativeModule.require('_debugger').start();
 
-    } else if (process.argv[1] == '--remote_debugging_server') {
+    } else if (process.argv[1] === '--remote_debugging_server') {
       // Start the debugging server
       NativeModule.require('internal/inspector/remote_debugging_server');
 
-    } else if (process.argv[1] == '--debug-agent') {
+    } else if (process.argv[1] === '--debug-agent') {
       // Start the debugger agent
       NativeModule.require('_debug_agent').start();
 
@@ -405,7 +405,7 @@
   NativeModule._cache = {};
 
   NativeModule.require = function(id) {
-    if (id == 'native_module') {
+    if (id === 'native_module') {
       return NativeModule;
     }