Makes sure subscriptions are closed on the NostrClient utility methods

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/accessories/NostrClientCountExt.kt

@@ -65,15 +65,18 @@ suspend fun INostrClient.queryCountSuspend(
 
     subscribe(listener)
 
+    val result =
+        try {
             queryCount(subId = subId, filters = mapOf(relay to listOf(filter)))
 
-    val result =
             withTimeoutOrNull(timeoutMs) {
                 resultChannel.receive()
             }
-
+        } finally {
             close(subId)
             unsubscribe(listener)
+        }
+
     resultChannel.close()
 
     return result

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/accessories/NostrClientSendAndWaitExt.kt

@@ -98,6 +98,8 @@ suspend fun INostrClient.sendAndWaitForResponseDetailed(
             }
         }
 
+    val receivedResults =
+        try {
             subscribe(subscription)
 
             // subscribe before sending the result.
@@ -126,9 +128,10 @@ suspend fun INostrClient.sendAndWaitForResponseDetailed(
                     result
                 }
 
-    val receivedResults = resultSubscription.await()
-
+            resultSubscription.await()
+        } finally {
             unsubscribe(subscription)
+        }
 
     // Clean up the channel
     resultChannel.close()

quartz/src/commonMain/kotlin/com/vitorpamplona/quartz/nip01Core/relay/client/accessories/NostrClientSingleDownloadExt.kt

@@ -104,14 +104,16 @@ suspend fun INostrClient.downloadFirstEvent(
             }
         }
 
+    val result =
+        try {
             openReqSubscription(subscriptionId, filters, listener)
 
-    val result =
             withTimeoutOrNull(30000) {
                 resultChannel.receive()
             }
-
+        } finally {
             close(subscriptionId)
+        }
 
     resultChannel.close()