⚗️ add Hedley annotations

include/nlohmann/detail/output/binary_writer.hpp

@@ -8,6 +8,7 @@
 #include <string> // string
 
 #include <nlohmann/detail/input/binary_reader.hpp>
+#include <nlohmann/detail/macro_scope.hpp>
 #include <nlohmann/detail/output/output_adapters.hpp>
 
 namespace nlohmann
@@ -714,7 +715,7 @@ class binary_writer
     static std::size_t calc_bson_entry_header_size(const string_t& name)
     {
         const auto it = name.find(static_cast<typename string_t::value_type>(0));
-        if (JSON_UNLIKELY(it != BasicJsonType::string_t::npos))
+        if (HEDLEY_UNLIKELY(it != BasicJsonType::string_t::npos))
         {
             JSON_THROW(out_of_range::create(409,
                                             "BSON key cannot contain code point U+0000 (at byte " + std::to_string(it) + ")"));