[turbofan] Fix UnifyReturn magic in the inliner.

src/compiler/js-inlining.h

Index: src/compiler/js-inlining.h
diff --git a/src/compiler/js-inlining.h b/src/compiler/js-inlining.h
index f35ea71aea94b4076f1a84162e1cf3c6ff0b2526..f7a0ba3a97c75e6bba86697247a23c5027479dbd 100644
--- a/src/compiler/js-inlining.h
+++ b/src/compiler/js-inlining.h
@@ -13,7 +13,6 @@ namespace internal {
 namespace compiler {
 
 class JSCallFunctionAccessor;
-struct Inlinee;
 
 class JSInliner final : public AdvancedReducer {
  public:
@@ -38,7 +37,7 @@ class JSInliner final : public AdvancedReducer {
   Node* CreateArgumentsAdaptorFrameState(JSCallFunctionAccessor* call,
                                          Zone* temp_zone);
 
-  Reduction InlineCall(Node* call, Inlinee& inlinee);
+  Reduction InlineCall(Node* call, Node* start, Node* end);
 };
 
 }  // namespace compiler