Fix non-noise cpplint errors in //crypto.

crypto/random.h

Index: crypto/random.h
diff --git a/crypto/random.h b/crypto/random.h
index 002616bd30ef7818f34fcf33d2750c824af44f80..61cde80719b5b4e13e79f9e7da3f1a540d863057 100644
--- a/crypto/random.h
+++ b/crypto/random.h
@@ -18,4 +18,4 @@ CRYPTO_EXPORT void RandBytes(void *bytes, size_t length);
 
 }
 
-#endif
+#endif  // CRYPTO_RANDOM_H_