Add inspection of whether frame is a construct frame to optimized frames

src/debug.cc

Index: src/debug.cc
diff --git a/src/debug.cc b/src/debug.cc
index f341fc6f1f1657f9eec848d011958f4224c8559a..c48e514ab8a0677b171379a79491e2f35e84c8de 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -1821,6 +1821,13 @@ void Debug::SetAfterBreakTarget(JavaScriptFrame* frame) {
 bool Debug::IsBreakAtReturn(JavaScriptFrame* frame) {
   HandleScope scope(isolate_);
 
+  // If there are no break points this cannot be break at return, as
+  // the debugger statement and stack guard bebug break cannot be at
+  // return.
+  if (!has_break_points_) {
+    return false;
+  }
+
   // Get the executing function in which the debug break occurred.
   Handle<SharedFunctionInfo> shared =
       Handle<SharedFunctionInfo>(JSFunction::cast(frame->function())->shared());