[turbofan] Fix lowering of Math.max for integral inputs.

test/unittests/compiler/js-builtin-reducer-unittest.cc

Index: test/unittests/compiler/js-builtin-reducer-unittest.cc
diff --git a/test/unittests/compiler/js-builtin-reducer-unittest.cc b/test/unittests/compiler/js-builtin-reducer-unittest.cc
index c98bc6cdffdc9f95ea28a860f722883d323117b4..5c508a5d4bcd37cb3cd9be15d6134e2f12b9fd46 100644
--- a/test/unittests/compiler/js-builtin-reducer-unittest.cc
+++ b/test/unittests/compiler/js-builtin-reducer-unittest.cc
@@ -112,7 +112,7 @@ TEST_F(JSBuiltinReducerTest, MathMax2) {
       if (t0->Is(Type::Integral32()) && t1->Is(Type::Integral32())) {
         ASSERT_TRUE(r.Changed());
         EXPECT_THAT(r.replacement(),
-                    IsSelect(kMachNone, IsNumberLessThan(p1, p0), p1, p0));
+                    IsSelect(kMachNone, IsNumberLessThan(p1, p0), p0, p1));
       } else {
         ASSERT_FALSE(r.Changed());
         EXPECT_EQ(IrOpcode::kJSCallFunction, call->opcode());