Include signal.h for sig_atomic_t in WIN32

src/util.h

@@ -28,9 +28,7 @@
 #include <boost/signals2/signal.hpp>
 #include <boost/thread/exceptions.hpp>
 
-#ifndef WIN32
 #include <signal.h>
-#endif
 
 static const bool DEFAULT_LOGTIMEMICROS = false;
 static const bool DEFAULT_LOGIPS        = false;