MIPS: More OStreamsUse OStreams more often.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 7f2a47fd4ccc6090d0c0a54baed9c1b3e4ccf635..f264f6248ec7f4fe13ce40ad326d94c9d5d9c0db 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -322,8 +322,9 @@ void LAccessArgumentsAt::PrintDataTo(StringStream* stream) {
 
 void LStoreNamedField::PrintDataTo(StringStream* stream) {
   object()->PrintTo(stream);
-  hydrogen()->access().PrintTo(stream);
-  stream->Add(" <- ");
+  OStringStream os;
+  os << hydrogen()->access() << " <- ";
+  stream->Add(os.c_str());
   value()->PrintTo(stream);
 }