Reorder headers in inputwin.c

Fixes unknown type name '_fpos64_t' error on Cygwin

src/ui/inputwin.c

@@ -35,10 +35,10 @@
 #define _XOPEN_SOURCE_EXTENDED
 #include "config.h"
 
+#include <stdio.h>
 #include <sys/select.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdio.h>
 #include <wchar.h>
 #include <sys/time.h>
 #include <errno.h>