[compiler-rt] Test fixups for MSVC. (PR #109887)

[Charlie Barto via llvm-commits]

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@@ -1,9 +1,9 @@
-// RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t
-// RUN: %clang_cl_asan -Wno-fortify-source %LD %Od %s %Fe%t.dll
+// RUN: %clang_cl_asan %Od /Oy- %p/dll_host.cpp %Fe%t
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barcharcraz wrote:

Turns out we hadn't fixed this internally, but I've added it here.

I decided to just add the substitution, although using `%if` could also make sense considering this is the only place where /Oy- shows up.

https://github.com/llvm/llvm-project/pull/109887