More linter happiness

Author: jagerman

tests/test_builtin_casters.cpp

@@ -144,7 +144,7 @@ TEST_SUBMODULE(builtin_casters, m) {
     using namespace std::literals;
     m.def("string_view_bytes", []() { return [](py::bytes b) { return b; }("abc \x80\x80 def"sv); });
     m.def("string_view_str",   []() { return [](py::str s) { return s; }("abc \342\200\275 def"sv); });
-    m.def("string_view_from_bytes", [](py::bytes b) { return [](std::string_view s) { return s; }(b); });
+    m.def("string_view_from_bytes", [](const py::bytes &b) { return [](std::string_view s) { return s; }(b); });
 #if PY_MAJOR_VERSION >= 3
     m.def("string_view_memoryview", []() {
         static constexpr auto val = "Have some \360\237\216\202"sv;