Clang-tidy: fix misc-non-private-member-variables-in-classes warnings

Signed-off-by: Pavel Artsishevsky <polter.rnd@gmail.com>

include/log/record.h

@@ -111,17 +111,9 @@ RecordStringView(const Char*, size_t) -> RecordStringView<Char>;
 template<typename Char, typename StringType>
 struct Record {
     struct Location {
-        // NOLINTNEXTLINE(*-explicit-conversions)
-        Location(Log::Location location)
-            : filename(location.file_name())
-            , function(location.function_name())
-            , line(location.line())
-        {
-        }
-
-        RecordStringView<char> filename;
-        RecordStringView<char> function;
-        size_t line;
+        RecordStringView<char> filename = {};
+        RecordStringView<char> function = {};
+        size_t line = {};
     };
 
     Level level = {};

include/log/sink.h

@@ -341,7 +341,10 @@ class SinkDriver<Logger, SingleThreadedPolicy> {
         Args&&... args) const -> void
     {
         FormatBufferType buffer;
-        RecordType record = {level, location, std::move(category)};
+        RecordType record
+            = {level,
+               {location.file_name(), location.function_name(), location.line()},
+               std::move(category)};
 
         // Flag to check that message has been evaluated
         bool evaluated = false;