[JSFunction] Undef macro after use

Change-Id: I755f2426d4f0e34115ff0c73e487e47db5290df1
Reviewed-on: https://chromium-review.googlesource.com/1127916Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54310}

src/objects.h

@@ -3340,6 +3340,7 @@ class JSFunction: public JSObject {
   V(kSizeWithPrototype, 0)
 
   DEFINE_FIELD_OFFSET_CONSTANTS(JSObject::kHeaderSize, JS_FUNCTION_FIELDS)
+#undef JS_FUNCTION_FIELDS
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSFunction);