MIPS: Fix ARM build

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 6f96d4468fcfbd96c97de6661b8416e166af3f6c..5d1364eaed3087f9e3cedea122b38d8c66ffed50 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -2075,7 +2075,7 @@ LInstruction* LChunkBuilder::DoTransitionElementsKind(
     LOperand* new_map_reg = TempRegister();
     LTransitionElementsKind* result =
         new(zone()) LTransitionElementsKind(object, new_map_reg, NULL);
-    return DefineSameAsFirst(result);
+    return result;
   } else if (FLAG_compiled_transitions) {
     LTransitionElementsKind* result =
         new(zone()) LTransitionElementsKind(object, NULL, NULL);