Fix warnings_checker.dart handling of multitests

tests/standalone/io/socket_ipv6_test.dart

Index: tests/standalone/io/socket_ipv6_test.dart
diff --git a/tests/standalone/io/socket_ipv6_test.dart b/tests/standalone/io/socket_ipv6_test.dart
index 476e597af42e6a0141d824c4facabe36e01874eb..f7176a57d041e8a5b70d4f0e5d29b1f5c98eda26 100644
--- a/tests/standalone/io/socket_ipv6_test.dart
+++ b/tests/standalone/io/socket_ipv6_test.dart
@@ -130,12 +130,12 @@ Future testIPv4toIPv6_IPV6Only() {
 }
 
 main() async {
-  await testIPv6toIPv6(); //               /// 01: ok
-  await testIPv4toIPv6(); //               /// 02: ok
-  await testIPv4toIPv4(); //               /// 03: ok
-  await testIPv6Lookup(); //               /// 04: ok
-  await testIPv4Lookup(); //               /// 05: ok
+  await testIPv6toIPv6(); //               //# 01: ok
+  await testIPv4toIPv6(); //               //# 02: ok
+  await testIPv4toIPv4(); //               //# 03: ok
+  await testIPv6Lookup(); //               //# 04: ok
+  await testIPv4Lookup(); //               //# 05: ok
 
-  await retry(testIPv6toIPv4); //          /// 06: ok
-  await retry(testIPv4toIPv6_IPV6Only); // /// 07: ok
+  await retry(testIPv6toIPv4); //          //# 06: ok
+  await retry(testIPv4toIPv6_IPV6Only); // //# 07: ok
 }