Merge bitcoin#10912: [tests] Fix incorrect memory_cleanse(…) call in crypto_tests.cpp

065039d [tests] Fix incorrect memory_cleanse(…) call in crypto_tests.cpp (practicalswift)

Pull request description:

  `chKey` and `chIV` are pointers, not arrays :-)

  Probably the result of copy-pasting of old code where the code was operating on arrays instead of pointers.

  If I'm reading the code correctly the absence/presence of these `memory_cleanse(…)` calls won't alter the outcome of the test in question (`TestPassphraseSingle`) even if fixed. Therefore removing.

Tree-SHA512: a053b2817bedf6ef889744e546ce9a0f165dee94aef6850d9d6a6bb05b0018789597371ecf154a4aec8588c0ef5626ef08c23c35e35927f6b0497b5f086146fe

Author: laanwj

src/wallet/test/crypto_tests.cpp

@@ -26,8 +26,8 @@ bool OldSetKeyFromPassphrase(const SecureString& strKeyData, const std::vector<u
 
     if (i != (int)WALLET_CRYPTO_KEY_SIZE)
     {
-        memory_cleanse(chKey, sizeof(chKey));
-        memory_cleanse(chIV, sizeof(chIV));
+        memory_cleanse(chKey, WALLET_CRYPTO_KEY_SIZE);
+        memory_cleanse(chIV, WALLET_CRYPTO_IV_SIZE);
         return false;
     }
     return true;