[turbofan] Add bounds check to Node::InputAt(index) and fix tests that go out of bounds.

test/unittests/compiler/scheduler-unittest.cc

Index: test/unittests/compiler/scheduler-unittest.cc
diff --git a/test/unittests/compiler/scheduler-unittest.cc b/test/unittests/compiler/scheduler-unittest.cc
index 51fcb1b72e1088bfa783f3489e57a75608c7d45a..ffb37018a5be0242631060870582e09fcb324d6c 100644
--- a/test/unittests/compiler/scheduler-unittest.cc
+++ b/test/unittests/compiler/scheduler-unittest.cc
@@ -657,8 +657,9 @@ TEST_F(SchedulerTest, BuildScheduleIfSplit) {
   Node* p3 = graph()->NewNode(common()->Parameter(2), graph()->start());
   Node* p4 = graph()->NewNode(common()->Parameter(3), graph()->start());
   Node* p5 = graph()->NewNode(common()->Parameter(4), graph()->start());
-  Node* cmp = graph()->NewNode(js()->LessThanOrEqual(LanguageMode::SLOPPY), p1,
-                               p2, p3, p4, graph()->start(), graph()->start());
+  Node* cmp =
+      graph()->NewNode(js()->LessThanOrEqual(LanguageMode::SLOPPY), p1, p2, p3,
+                       p4, p5, graph()->start(), graph()->start());
   Node* branch = graph()->NewNode(common()->Branch(), cmp, graph()->start());
   Node* true_branch = graph()->NewNode(common()->IfTrue(), branch);
   Node* false_branch = graph()->NewNode(common()->IfFalse(), branch);