[debugger] tuned StepNext and StepOut at return position

src/debug/debug.h

Index: src/debug/debug.h
diff --git a/src/debug/debug.h b/src/debug/debug.h
index 34b4fe2c2cf66cac9cb52de519616df1abf2009e..7bd7077ae352f95299297caf15e43e34d471f054 100644
--- a/src/debug/debug.h
+++ b/src/debug/debug.h
@@ -562,6 +562,8 @@ class Debug {
     // Frame id for the frame of the current break.
     StackFrame::Id break_frame_id_;
 
+    StackFrame::Id last_step_frame_id_;
+
     // Step action for last step performed.
     StepAction last_step_action_;