[Crypto] Delete mbedtls ctx in deconstructor.

Would cause memory leak when the context was `start`ed but not
`finish`ed.

1 files changed, 1 insertions, 0 deletions

diff --git a/core/crypto/crypto.h b/core/crypto/crypto.h
index a2ccbba58a..a46f42949d 100644
--- a/core/crypto/crypto.h
+++ b/core/crypto/crypto.h
@@ -82,6 +82,7 @@ public:
 	virtual PackedByteArray finish() = 0;
 
 	HMACContext() {}
+	virtual ~HMACContext() {}
 };
 
 class Crypto : public RefCounted {