Do not redirect NUL

MGFS/MultiGameFSTempl.hpp

@@ -787,11 +787,11 @@ private:
 		if ( isAlreadyRedirected( file ) ) return std::basic_string<CharType>();
 		if constexpr ( std::is_same<CharType, char>::value ) {
 			if ( file && ( !std::strcmp( file, "." ) || !std::strcmp( file, ".." ) || !std::strcmp( file, "CONIN$" ) ||
-						   !std::strcmp( file, "CONOUT$" ) ) )
+						   !std::strcmp( file, "CONOUT$" ) || !std::strcmp( file, "NUL" ) ) )
 				return std::basic_string<CharType>();
 		} else {
 			if ( file && ( !std::wcscmp( file, L"." ) || !std::wcscmp( file, L".." ) || !std::wcscmp( file, L"CONIN$" ) ||
-						   !std::wcscmp( file, L"CONOUT$" ) ) )
+						   !std::wcscmp( file, L"CONOUT$" ) || !std::wcscmp( file, L"NUL" ) ) )
 				return std::basic_string<CharType>();
 		}
 		auto relPath = getRelPath( file );
@@ -873,12 +873,12 @@ private:
 	std::basic_string<CharType> getFullPath( const CharType *file ) {
 		if ( !file || ( *file && file[1] == sym::colon() ) ) return file;
 		if constexpr ( std::is_same<CharType, char>::value ) {
-			if ( ( !std::strcmp( file, "." ) || !std::strcmp( file, ".." ) || !std::strcmp( file, "CONIN$" ) ||
-				   !std::strcmp( file, "CONOUT$" ) ) )
+			if ( !std::strcmp( file, "." ) || !std::strcmp( file, ".." ) || !std::strcmp( file, "CONIN$" ) ||
+				   !std::strcmp( file, "CONOUT$" ) ||  !std::strcmp( file, "NUL" ) )
 				return file;
 		} else {
-			if ( ( !std::wcscmp( file, L"." ) || !std::wcscmp( file, L".." ) || !std::wcscmp( file, L"CONIN$" ) ||
-				   !std::wcscmp( file, L"CONOUT$" ) ) )
+			if ( !std::wcscmp( file, L"." ) || !std::wcscmp( file, L".." ) || !std::wcscmp( file, L"CONIN$" ) ||
+				   !std::wcscmp( file, L"CONOUT$" ) || !std::wcscmp( file, L"NUL" ) )
 				return file;
 		}
 		return currentFolder_ + file;