Swap #if blocks in uid.c so target platform gets checked before host

This avoids the case where a UEFI build on FreeBSD tries to call the system
issetugid function instead of returning 0 as it should do.

CLA: trivial
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NPaul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9158)

crypto/uid.c

@@ -10,20 +10,20 @@
 #include <openssl/crypto.h>
 #include <openssl/opensslconf.h>
 
-#if defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ > 2) || defined(__DragonFly__)
-
-# include OPENSSL_UNISTD
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
 
 int OPENSSL_issetugid(void)
 {
-    return issetugid();
+    return 0;
 }
 
-#elif defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_UEFI)
+#elif defined(__OpenBSD__) || (defined(__FreeBSD__) && __FreeBSD__ > 2) || defined(__DragonFly__)
+
+# include OPENSSL_UNISTD
 
 int OPENSSL_issetugid(void)
 {
-    return 0;
+    return issetugid();
 }
 
 #else