[csa] Add Unreachable() and use it after throw sites

src/builtins/builtins-typedarray.cc

Index: src/builtins/builtins-typedarray.cc
diff --git a/src/builtins/builtins-typedarray.cc b/src/builtins/builtins-typedarray.cc
index 10f1f7969a0739a9a39c4236a871563c039fb433..dadc95f5941e51e759411f4c94a05560ba06af50 100644
--- a/src/builtins/builtins-typedarray.cc
+++ b/src/builtins/builtins-typedarray.cc
@@ -58,12 +58,11 @@ void TypedArrayBuiltinsAssembler::GenerateTypedArrayPrototypeGetter(
   Bind(&receiver_is_incompatible);
   {
     // The {receiver} is not a valid JSTypedArray.
-    Node* result =
-        CallRuntime(Runtime::kThrowIncompatibleMethodReceiver, context,
-                    HeapConstant(factory()->NewStringFromAsciiChecked(
-                        method_name, TENURED)),
-                    receiver);
-    Return(result);  // Never reached.
+    CallRuntime(Runtime::kThrowIncompatibleMethodReceiver, context,
+                HeapConstant(
+                    factory()->NewStringFromAsciiChecked(method_name, TENURED)),
+                receiver);
+    Unreachable();
   }
 }