fix the compare nil ic

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 507aeb6772a1c1919c04ad0e39b36a13af5716c9..598bf1731ea3ebfdafa0fcd1d4bd2f0550295fd7 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -176,8 +176,8 @@ void CompareNilICStub::InitializeInterfaceDescriptor(
   descriptor->register_params_ = registers;
   descriptor->deoptimization_handler_ =
       FUNCTION_ADDR(CompareNilIC_Miss);
-  descriptor->miss_handler_ =
-      ExternalReference(IC_Utility(IC::kCompareNilIC_Miss), isolate);
+  descriptor->SetMissHandler(
+      ExternalReference(IC_Utility(IC::kCompareNilIC_Miss), isolate));
 }
 
 
@@ -200,7 +200,7 @@ void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm) {
     for (int i = 0; i < param_count; ++i) {
       __ push(descriptor->register_params_[i]);
     }
-    ExternalReference miss = descriptor->miss_handler_;
+    ExternalReference miss = descriptor->miss_handler();
     __ CallExternalReference(miss, descriptor->register_param_count_);
   }