Bug 1297581 - IonMonkey: MIPS64: Fix crash on running octane richards. r=jonco

---
 js/src/jit/mips64/MacroAssembler-mips64.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

js/src/jit/mips64/MacroAssembler-mips64.cpp

@@ -2293,9 +2293,9 @@ MacroAssembler::branchValueIsNurseryObjectImpl(Condition cond, const T& value, R
     Label done;
     branchTestObject(Assembler::NotEqual, value, cond == Assembler::Equal ? &done : label);
 
-    extractObject(value, temp);
-    orPtr(Imm32(gc::ChunkMask), temp);
-    branch32(cond, Address(temp, gc::ChunkLocationOffsetFromLastByte),
+    extractObject(value, SecondScratchReg);
+    orPtr(Imm32(gc::ChunkMask), SecondScratchReg);
+    branch32(cond, Address(SecondScratchReg, gc::ChunkLocationOffsetFromLastByte),
              Imm32(int32_t(gc::ChunkLocation::Nursery)), label);
 
     bind(&done);