Moved server.h to include/wine.

diff --git a/windows/timer.c b/windows/timer.c
index c663976..47b3a67 100644
--- a/windows/timer.c
+++ b/windows/timer.c
@@ -12,7 +12,7 @@
 
 #include "winproc.h"
 #include "message.h"
-#include "server.h"
+#include "wine/server.h"
 #include "debugtools.h"
 
 DEFAULT_DEBUG_CHANNEL(timer);