Fix typo in #undef

Bug: None
Change-Id: Idc7857342e9249d66473ab4af1044e1cd2cab5a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1680788Reviewed-by: Adam Klein <adamk@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62430}

src/compiler/simd-scalar-lowering.cc

@@ -1198,7 +1198,7 @@ void SimdScalarLowering::LowerNode(Node* node) {
   }
       F32X4_UNOP_CASE(Abs)
       F32X4_UNOP_CASE(Neg)
-#undef F32x4_UNOP_CASE
+#undef F32X4_UNOP_CASE
     case IrOpcode::kF32x4RecipApprox:
     case IrOpcode::kF32x4RecipSqrtApprox: {
       DCHECK_EQ(1, node->InputCount());