Update listener error handling.

pkg/fasta/lib/src/source/stack_listener.dart

Index: pkg/fasta/lib/src/source/stack_listener.dart
diff --git a/pkg/fasta/lib/src/source/stack_listener.dart b/pkg/fasta/lib/src/source/stack_listener.dart
index 310d7e6f0fb316a51078c3ab47eb094edb15460c..dce8ae19c89ab5b2cc5250755871becedc09a3fc 100644
--- a/pkg/fasta/lib/src/source/stack_listener.dart
+++ b/pkg/fasta/lib/src/source/stack_listener.dart
@@ -130,7 +130,7 @@ abstract class StackListener extends Listener {
     }
     if (recoverableErrors.isNotEmpty) {
       // TODO(ahe): Handle recoverable errors better.
-      inputError(uri, recoverableErrors.first.token.charOffset,
+      inputError(uri, recoverableErrors.first.beginOffset,
           recoverableErrors);
     }
   }