[clang] [CIR] Compute union base subobject for tail-padding reuse (PR #201428)

[Erich Keane via cfe-commits]

================
@@ -72,7 +72,7 @@ struct CIRRecordLowering final {
                        mlir::Type storageType);
 
   void lower(bool NonVirtualBaseType);
----------------
erichkeane wrote:

mind as a drive-by fixing the capitalization of `Non` here?

https://github.com/llvm/llvm-project/pull/201428