[turbofan] Next step towards shared operators.

src/compiler/change-lowering.cc

Index: src/compiler/change-lowering.cc
diff --git a/src/compiler/change-lowering.cc b/src/compiler/change-lowering.cc
index f3d732b063adfc9452c3beef9dfdc65b8cd2a6fb..7982b76c8c79bf1b5c48844adc96d2c822f1db33 100644
--- a/src/compiler/change-lowering.cc
+++ b/src/compiler/change-lowering.cc
@@ -168,8 +168,9 @@ Reduction ChangeLowering::ChangeTaggedToUI32(Node* val, Node* control,
   Node* branch = graph()->NewNode(common()->Branch(), tag, control);
 
   Node* if_true = graph()->NewNode(common()->IfTrue(), branch);
-  Operator* op = (signedness == kSigned) ? machine()->ChangeFloat64ToInt32()
-                                         : machine()->ChangeFloat64ToUint32();
+  const Operator* op = (signedness == kSigned)
+                           ? machine()->ChangeFloat64ToInt32()
+                           : machine()->ChangeFloat64ToUint32();
   Node* change = graph()->NewNode(op, LoadHeapNumberValue(val, if_true));
 
   Node* if_false = graph()->NewNode(common()->IfFalse(), branch);