Move size_t in c++11

Author: lucic71

rules/cstddef/src.cpp

@@ -0,0 +1,6 @@
+// Copyright (c) 2022-present INESC-ID.
+// Distributed under the MIT license that can be found in the LICENSE file.
+
+#include <cstddef>
+
+typedef std::size_t t9;

rules/cstddef/src_cxx17.cpp

@@ -4,7 +4,6 @@
 #include <cstddef>
 
 using t1 = std::byte;
-typedef std::size_t t9;
 
 std::byte f1(const std::byte &a0, unsigned a1) { return operator<<(a0, a1); }