Fix *nix build, remove redundnat typedef of xpevent_t

src/xpdev/xpevent.c

-/* xpevent.c */
-
 /* *nix emulation of Win32 *Event API */
 
-/* $Id: xpevent.c,v 1.17 2018/07/24 01:13:10 rswindell Exp $ */
-
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@@ -17,27 +13,15 @@
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 #include <stdio.h>		/* NULL */
 #include <stdlib.h>		/* malloc() */
-#include "xpevent.h"
+#include "eventwrap.h"
 #include "genwrap.h"
 
 xpevent_t

src/xpdev/xpevent.h

@@ -27,7 +27,6 @@
 #endif
 
 #include "gen_defs.h"
-typedef HANDLE xpevent_t;
 #define WaitForEvent(event, ms) WaitForSingleObject(event, ms)
 
 #include <pthread.h>