frog await: allow errors after the await within try-catch blocks.

frog/tests/await/src/TryCatch8Test.dart

Index: frog/tests/await/src/TryCatch8Test.dart
diff --git a/frog/tests/await/src/TryCatch8Test.dart b/frog/tests/await/src/TryCatch8Test.dart
index 4959e506ce25d611946e2a891ced9e86239fbb44..e43df5633c33b895369c84197c8c9e3a101c021c 100644
--- a/frog/tests/await/src/TryCatch8Test.dart
+++ b/frog/tests/await/src/TryCatch8Test.dart
@@ -9,7 +9,7 @@
 
 errorDuring() {
   try {
-    final t = await errorOf("my error");
+    final t = await errorOf("my error"); // needs normalization
     return t;
   } catch (e) {
     Expect.equals("my error", e);