Fix the IsTheHole bug.

For Double constant of non nan, object_ may be uninitialized.

(This patch comes from weiliang.lin@intel.com )

BUG=
R=mvstanton@chromium.org

Review URL: https://codereview.chromium.org/565183004

Patch from Chunyang Dai <chunyang.dai@intel.com>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24007 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen-instructions.h

@@ -3593,7 +3593,8 @@ class HConstant FINAL : public HTemplateInstruction<0> {
     if (HasDoubleValue() && FixedDoubleArray::is_the_hole_nan(double_value_)) {
       return true;
     }
-    return object_.IsKnownGlobal(isolate()->heap()->the_hole_value());
+    return object_.IsInitialized() &&
+           object_.IsKnownGlobal(isolate()->heap()->the_hole_value());
   }
   bool HasNumberValue() const { return has_double_value_; }
   int32_t NumberValueAsInteger32() const {