Method StackWalker

src/crash_writer.cpp:39–47

public:
	StackWalker(std::string const& cause)
	: fp(crashlog_path, std::ios::app)
	{
		if (!fp.good()) return;

		fp << util::strftime("--- %y-%m-%d %H:%M:%S ------------------\n");
		fp << agi::format("VER - %s\n", GetAegisubLongVersionString());
		fp << agi::format("FTL - Beginning stack dump for \"%s\": \n", cause);
	}

	~StackWalker() {
		if (!fp.good()) return;