MIPS: Fix 'MIPS: Move Maps' back pointers from "transitions" to "constructor" field'.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 3be283de831ad40240e83daafb6c1cf5044f8cc9..07e48db05c2e722b4a0c59dfc3ba70ab11f22323 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -2659,7 +2659,6 @@ void LCodeGen::EmitClassOfTest(Label* is_true,
   // Check if the constructor in the map is a function.
   Register instance_type = scratch1();
   DCHECK(!instance_type.is(temp));
-  DCHECK(!instance_type.is(temp2));
   __ GetMapConstructor(temp, temp, temp2, instance_type);
 
   // Objects with a non-function constructor have class 'Object'.