"Burst" of NTP update leads to an error

reactos-bootcd-0.4.14-dev-1339-g1c706d7-x86-gcc-lin-dbg

"Burst" of NTP update request (click frenetiquely on "update") leads to an error. Clicking once works fine.

Related to : CORE-15257, CORE-16654

(win32ss/user/ntuser/msgqueue.c:1537) err: Not the same cursor!
(win32ss/user/ntuser/msgqueue.c:1537) err: Not the same cursor!
(win32ss/user/ntuser/msgqueue.c:1537) err: Not the same cursor!
(win32ss/user/ntuser/msgqueue.c:1537) err: Not the same cursor!
(base/services/w32time/w32time.c:171) Entered SetTime.
(base/services/w32time/w32time.c:192) Time Server is 'pool.ntp.org'.
(dll/win32/dnsapi/rpc.c:19) DNSRSLVR_HANDLE_bind((null))
(base/services/dnsrslvr/cache.c:116) DnsIntCacheGetEntryByName(pool.ntp.org 1 0x4 0023A988)
(dll/win32/dnsapi/rpc.c:61) RpcBindingFree returned 0x6a6
(base/services/w32time/w32time.c:353) W32TimeSyncNow failed and clock not set.
(dll/cpl/timedate/internettime.c:262) UpdateNTPStatus(): Failed to synchronize the time! (Error: 31).