BUG/MINOR: server: move the directive #endif to the end of file

If a source file includes proto/server.h twice or more, redefinition errors will
be triggered for such inline functions as server_throttle_rate(),
server_is_draining(), srv_adm_set_maint() and so on. Just move #endif directive
to the end of file to solve this issue.

Signed-off-by: Godbach <nylzhaowei@gmail.com>
(cherry picked from commit e468d55998e134dac1b18d5d9d075ffd5691c827)
diff --git a/include/proto/server.h b/include/proto/server.h
index 9893266..71c8b13 100644
--- a/include/proto/server.h
+++ b/include/proto/server.h
@@ -54,8 +54,6 @@
 	s->counters.last_sess = now.tv_sec;
 }
 
-#endif /* _PROTO_SERVER_H */
-
 /*
  * Registers the server keyword list <kwl> as a list of valid keywords for next
  * parsing sessions.
@@ -200,6 +198,8 @@
 	srv_clr_admin_flag(s, SRV_ADMF_FMAINT);
 }
 
+#endif /* _PROTO_SERVER_H */
+
 /*
  * Local variables:
  *  c-indent-level: 8