Use newer async/await instead of old-style callbacks.

dns/BlockedCount.swift

@@ -48,26 +48,21 @@ struct BlockedCount: View {
 
         let request = URLRequest(url: dohURL)
 
-        URLSession.shared.dataTask(with: request) { data, response, error in
-            DispatchQueue.main.async {
-                if error != nil {
-                    txtRecord = "Error"
-                    return
-                }
-
-                guard let data = data else {
-                    txtRecord = "Error"
-                    return
-                }
-
-                guard let count = parseResponse(data: data) else {
-                    txtRecord = "Error"
-                    return
-                }
+        Task {
+            do {
+                let (data, _) = try await URLSession.shared.data(for: request)
 
+                if let count = parseResponse(data: data) {
                     txtRecord = count
                 }
-        }.resume()
+                else {
+                    txtRecord = "Error"
+                }
+            }
+            catch {
+                txtRecord = "Error"
+            }
+        }
     }
 }