[turbofan] Specialize to closure with function context specialization.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index a8f0c8905ffe5b307774395c8a9a14243575158e..b410c3a47a49a8e023f531ccfe7bb79903c580a9 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -799,7 +799,10 @@ struct InliningPhase {
         &graph_reducer, data->jsgraph(),
         data->info()->is_function_context_specializing()
             ? handle(data->info()->context())
-            : MaybeHandle<Context>());
+            : MaybeHandle<Context>(),
+        data->info()->is_function_context_specializing()
+            ? data->info()->closure()
+            : MaybeHandle<JSFunction>());
     JSFrameSpecialization frame_specialization(
         &graph_reducer, data->info()->osr_frame(), data->jsgraph());
     JSNativeContextSpecialization::Flags flags =