src: fix incorrect comments in crypto

PR-URL: nodejs/node#44470
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

src/crypto/crypto_cipher.cc

@@ -480,7 +480,7 @@ void CipherBase::InitIv(const char* cipher_type,
 
   // Throw if an IV was passed which does not match the cipher's fixed IV length
   // static_cast<int> for the iv_buf.size() is safe because we've verified
-  // prior that the value is not larger than MAX_INT.
+  // prior that the value is not larger than INT_MAX.
   if (!is_authenticated_mode &&
       has_iv &&
       static_cast<int>(iv_buf.size()) != expected_iv_len) {

src/crypto/crypto_keygen.h

@@ -197,8 +197,8 @@ struct KeyPairGenTraits final {
 };
 
 struct SecretKeyGenConfig final : public MemoryRetainer {
-  size_t length;  // Expressed a a number of bits
-  char* out = nullptr;  // Placeholder for the generated key bytes
+  size_t length;        // In bytes.
+  char* out = nullptr;  // Placeholder for the generated key bytes.
 
   void MemoryInfo(MemoryTracker* tracker) const override;
   SET_MEMORY_INFO_NAME(SecretKeyGenConfig)