Fix issue #1249

include/spdlog/common.h

@@ -101,14 +101,13 @@ using sink_ptr = std::shared_ptr<sinks::sink>;
 using sinks_init_list = std::initializer_list<sink_ptr>;
 using err_handler = std::function<void(const std::string &err_msg)>;
 using string_view_t = fmt::basic_string_view<char>;
+using wstring_view_t = fmt::basic_string_view<wchar_t>;
 using memory_buf_t = fmt::basic_memory_buffer<char, 250>;
 
 #ifdef SPDLOG_WCHAR_TO_UTF8_SUPPORT
 #ifndef _WIN32
 #error SPDLOG_WCHAR_TO_UTF8_SUPPORT only supported on windows
 #else
-using wstring_view_t = fmt::basic_string_view<wchar_t>;
-
 template<typename T>
 struct is_convertible_to_wstring_view : std::is_convertible<T, wstring_view_t>
 {};