Format all tests.

tests/standalone/io/issue_22637_test.dart

Index: tests/standalone/io/issue_22637_test.dart
diff --git a/tests/standalone/io/issue_22637_test.dart b/tests/standalone/io/issue_22637_test.dart
index 50aeb398d56a7a80af613908e64573e8697a2b56..2eba30ba2685e6d4df1cb0ba7b987c0fe63db72e 100644
--- a/tests/standalone/io/issue_22637_test.dart
+++ b/tests/standalone/io/issue_22637_test.dart
@@ -31,10 +31,10 @@ void serverListen(RawSocket serverSide) {
       server.close();
     }
   }
+
   serverSide.listen(serveData);
 }
 
-
 void clientListen(RawSocketEvent event) {
   if (event == RawSocketEvent.READ) {
     client.readEventsEnabled = false;
@@ -50,11 +50,10 @@ void clientListen(RawSocketEvent event) {
       data = client.read(100);
       Expect.isNotNull(data);
       client.close();
-    });      
+    });
   }
 }
 
-
 test() async {
   server = await RawServerSocket.bind(InternetAddress.LOOPBACK_IP_V4, 0);
   server.listen(serverListen);
@@ -62,7 +61,6 @@ test() async {
   client.listen(clientListen);
 }
 
-
 void main() {
   test();
 }