src: fix build/header_guard cpplint warnings

bnoordhuis · Fishrock123 · commit 6280ccdaaaf3 · 2016-07-05T22:36:38.000+02:00
PR-URL: #7462 Reviewed-By: Trevor Norris <trev.norris@gmail.com>
diff --git a/src/node_version.h b/src/node_version.h
@@ -51,4 +51,4 @@
  */
 #define NODE_MODULE_VERSION 48 /* Node.js v6.0.0 */
 
-#endif  /* SRC_NODE_VERSION_H_ */
+#endif  // SRC_NODE_VERSION_H_
