fix stupid max / min macros in windows.h

Author: Totto16

src/discord/core.hpp

@@ -5,6 +5,10 @@
 #include "helper/expected.hpp"
 
 #include <chrono>
+#ifdef _WIN32
+#define NOMINMAX
+#endif
+
 #include <discord.h>
 #include <memory>
 #include <string>

src/helper/sleep.cpp

@@ -4,6 +4,7 @@
 #include "sleep.hpp"
 
 #if defined(_MSC_VER)
+#define NOMINMAX
 #include <windows.h>
 #else
 #include <cerrno>