Mark game state view diff nodiscard

src/main/cpp/net/eagle0/shardok/library/view_filters/GameStateViewDiffer.hpp

@@ -17,7 +17,7 @@ namespace shardok {
 using net::eagle0::shardok::api::GameStateView;
 using net::eagle0::shardok::api::GameStateViewDiff;
 
-auto MakeGameStateViewDiff(const GameStateView& before, const GameStateView& after)
+[[nodiscard]] auto MakeGameStateViewDiff(const GameStateView& before, const GameStateView& after)
         -> std::optional<GameStateViewDiff>;
 
 }  // namespace shardok

src/main/cpp/net/eagle0/shardok/util/MapLoader.hpp

@@ -26,10 +26,10 @@ public:
     [[nodiscard]] auto what() const noexcept -> const char* override { return description.c_str(); }
 };
 
-[[nodiscard]] auto LoadMap(const std::string& mapName) -> HexMapProto;
+auto LoadMap(const std::string& mapName) -> HexMapProto;
 
-[[nodiscard]] auto LoadMapFromBytes(const std::string& mapBytes) -> HexMapProto;
+auto LoadMapFromBytes(const std::string& mapBytes) -> HexMapProto;
 
-[[nodiscard]] auto GetMapNames() -> std::vector<std::string>;
+auto GetMapNames() -> std::vector<std::string>;
 
 #endif  // EAGLE0_SHARDOK_UTIL_MAP_LOADER_HPP