add TODO to investigate. Double closing of stream most often is ignored.

quartz/src/androidMain/kotlin/com/vitorpamplona/quartz/nip03Timestamp/ots/op/OpCrypto.kt

@@ -93,6 +93,7 @@ abstract class OpCrypto internal constructor() : OpUnary() {
             count = inputStream.read(chunk, 0, 1048576)
         }
 
+        // TODO: Is this needed? Closing of stream should be callers responsibility?
         inputStream.close()
         val hash = digest.digest()