must check pc signature in example

Jan Willamowius

2019-04-17 9a1aca5366802ca5ac76297f877f7ff8739e81ba

 src/library/base/StringUtils.cpp

@@ -11,8 +11,9 @@
#include <string>
#include <cstring>
#include <algorithm>
#include <stdexcept>

#ifdef WIN32
#ifdef _WIN32
#include <time.h> //mktime under windows
#endif