[PATCH] wintrust: Add parameter check in WTHelperGetProvCertFromChain

[Vijay Kiran Kamuju]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=44061

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair(a)hotmail.com>
Signed-off-by: Vijay Kiran Kamuju <infyquest(a)gmail.com>