[hydrogen] don't bailout assignments to consts

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
diff --git a/src/arm/lithium-arm.h b/src/arm/lithium-arm.h
index 628c3d1a593a83007bf734f58a7c5eaba3cb9680..901dfd35a66c2498bb0dc62737f5f0f8bbafe2fa 100644
--- a/src/arm/lithium-arm.h
+++ b/src/arm/lithium-arm.h
@@ -1292,6 +1292,7 @@ class LStoreContextSlot: public LTemplateInstruction<0, 2, 0> {
   LOperand* context() { return InputAt(0); }
   LOperand* value() { return InputAt(1); }
   int slot_index() { return hydrogen()->slot_index(); }
+  bool needs_is_hole_check() { return hydrogen()->needs_is_hole_check(); }
 
   virtual void PrintDataTo(StringStream* stream);
 };