[mips] Fix typos introduced by previous commit.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 6d7892d5c3f3434f1803981264d09f39a3e70729..befe77aa507ed855f7a6ed43b5faf2052da08f12 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -857,7 +857,7 @@ void MathPowStub::Generate(MacroAssembler* masm) {
       // double_scratch can be overwritten in the delay slot.
       // Calculates square root of base.  Check for the special case of
       // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13).
-      __ Move(double_scratch, std::numeric_limits<double>::infinity());
+      __ Move(double_scratch, -std::numeric_limits<double>::infinity());
       __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch);
       __ neg_d(double_result, double_scratch);
 
@@ -877,7 +877,7 @@ void MathPowStub::Generate(MacroAssembler* masm) {
       // double_scratch can be overwritten in the delay slot.
       // Calculates square root of base.  Check for the special case of
       // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13).
-      __ Move(double_scratch, std::numeric_limits<double>::infinity());
+      __ Move(double_scratch, -std::numeric_limits<double>::infinity());
       __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, double_base, double_scratch);
       __ Move(double_result, kDoubleRegZero);