[turbofan] Fix typing rule for CheckBounds.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 085b55482444f07d36c66c84efdbb0d2b276a486..67d11370e4b41f14198d23090bac515580b835f0 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1569,7 +1569,7 @@ Type* Typer::Visitor::TypeCheckBounds(Node* node) {
   index = Type::Intersect(index, Type::Integral32(), zone());
   if (!index->IsInhabited() || !length->IsInhabited()) return Type::None();
   double min = std::max(index->Min(), 0.0);
-  double max = std::min(index->Max(), length->Min() - 1);
+  double max = std::min(index->Max(), length->Max() - 1);
   if (max < min) return Type::None();
   return Type::Range(min, max, zone());
 }