HConstant::PrintDataTo() uses wrong format string

Review URL: https://chromiumcodereview.appspot.com/10783031
Patch from Zheng Liu <zheng.z.liu@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12121 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen-instructions.cc

@@ -1479,7 +1479,7 @@ void HConstant::PrintDataTo(StringStream* stream) {
   if (has_int32_value_) {
     stream->Add("%d ", int32_value_);
   } else if (has_double_value_) {
-    stream->Add("%lf ", FmtElm(double_value_));
+    stream->Add("%f ", FmtElm(double_value_));
   } else {
     handle()->ShortPrint(stream);
   }