[clang] [clang][modules] Reset codegen options. (PR #74006)

[Juergen Ributzka via cfe-commits]

================
@@ -515,6 +430,8 @@ ENUM_CODEGENOPT(ZeroCallUsedRegs, llvm::ZeroCallUsedRegs::ZeroCallUsedRegsKind,
 /// non-deleting destructors. (No effect on Microsoft ABI.)
 CODEGENOPT(CtorDtorReturnThis, 1, 0)
 
+#include "DebugOptions.def"
----------------
ributzka wrote:

I added the FIXME.

https://github.com/llvm/llvm-project/pull/74006