Avoid redefine warning

Bushstar · Bushstar · commit 0b3a65455a20 · 2019-04-10T12:16:52.000+01:00
diff --git a/src/fs.cpp b/src/fs.cpp
@@ -3,7 +3,9 @@
 #ifndef WIN32
 #include <fcntl.h>
 #else
+#ifndef NOMINMAX
 #define NOMINMAX
+#endif
 #include <codecvt>
 #include <windows.h>
 #endif
