[PATCH 0/1] MR2505: iphlpapi: Return FALSE for bad handles in IcmpCloseHandle

[Marc-Aurel Zent (＠marzent)]

Passing `NULL` or `INVALID_HANDLE_VALUE` into `IcmpCloseHandle` currently causes a segfault on wine, whereas it returns `FALSE` on windows.

It seems FFXIV occasionally does this.