Fix debugger regression in issue 28980

runtime/vm/parser.h

Index: runtime/vm/parser.h
diff --git a/runtime/vm/parser.h b/runtime/vm/parser.h
index a696a2814e9e19fba2629635a918b847b2aa7cfa..d6bdde4f1faf74116918fcaa6e27b613bc460d20 100644
--- a/runtime/vm/parser.h
+++ b/runtime/vm/parser.h
@@ -666,8 +666,10 @@ class Parser : public ValueObject {
   SequenceNode* CloseAsyncFunction(const Function& closure,
                                    SequenceNode* closure_node);
 
-  SequenceNode* CloseAsyncClosure(SequenceNode* body);
-  SequenceNode* CloseAsyncTryBlock(SequenceNode* try_block);
+  SequenceNode* CloseAsyncClosure(SequenceNode* body,
+                                  TokenPosition func_end_pos);
+  SequenceNode* CloseAsyncTryBlock(SequenceNode* try_block,
+                                   TokenPosition func_end_pos);
   SequenceNode* CloseAsyncGeneratorTryBlock(SequenceNode* body);
 
   void AddAsyncClosureParameters(ParamList* params);