remove OS_FREEBSD preventation from xmd5

src/libthecore/xmd5.cpp

@@ -1,7 +1,5 @@
 #include "stdafx.h"
 
-#ifndef OS_FREEBSD
-
 /*
  * luau (Lib Update/Auto-Update): Simple Update Library
  * Copyright (C) 2003  David Eklund
@@ -341,5 +339,3 @@ void MD5Transform(uint32_t buf[4], uint32_t const in[16])
     buf[2] += c;
     buf[3] += d;
 }
-
-#endif // #ifndef OS_FREEBSD

src/libthecore/xmd5.h

@@ -1,5 +1,4 @@
-#ifndef OS_FREEBSD
-
+#pragma once
 /*
  * luau (Lib Update/Auto-Update): Simple Update Library
  * Copyright (C) 2003  David Eklund
@@ -65,5 +64,3 @@ char* MD5End(MD5_CTX *, char *);
 
 char* lutil_md5_file(const char *filename, char *buf);
 char* lutil_md5_data(const unsigned char *data, unsigned int len, char *buf);
-
-#endif // #ifndef OS_FREEBSD