[PATCH v7] mscoree: Allow loading of registration free .NET COM objects

[Vincent Povirk]

+    if (lstrlenW(filename) + lstrlenW(path) + ARRAY_SIZE(str_dll) + 4
>= filename_size) /* Include blackslash and null-terminator */

This looks like it goes over the needed length. ARRAY_SIZE will
include the null terminator from str_dll, and the backslash is only
one character.

This looks good otherwise, but unfortunately attempting to run your
test with wine-mono master (which has csc) fails due to an unrelated
bug. I'll have to fix that before I can verify the test results.