Fix LStoreKeyed error when tracing instruction.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index f7eeb60fcd178cd85b1712073dc05f4544ebeb3d..c5c7755abfcdc98e8b5f1f2e736e889a12866234 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -452,7 +452,14 @@ void LStoreKeyed::PrintDataTo(StringStream* stream) {
   } else {
     stream->Add("] <- ");
   }
-  value()->PrintTo(stream);
+
+  if (value() == NULL) {
+    ASSERT(hydrogen()->IsConstantHoleStore() &&
+           hydrogen()->value()->representation().IsDouble());
+    stream->Add("<the hole(nan)>");
+  } else {
+    value()->PrintTo(stream);
+  }
 }