Moved server.h to include/wine.

diff --git a/files/dos_fs.c b/files/dos_fs.c
index ee449fd..e73fddc 100644
--- a/files/dos_fs.c
+++ b/files/dos_fs.c
@@ -34,7 +34,7 @@
 #include "msdos.h"
 #include "ntddk.h"
 #include "options.h"
-#include "server.h"
+#include "wine/server.h"
 
 #include "debugtools.h"