[llvm] Reapply "Allow "[[FLAGS=<none>]]" value in the ELF Fileheader Flags field (#143845)" (PR #151094)

[Jacob Lambert via llvm-commits]

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@@ -281,7 +281,8 @@ template <class ELFT> Expected<ELFYAML::Object *> ELFDumper<ELFT>::dump() {
   Y->Header.Type = Obj.getHeader().e_type;
   if (Obj.getHeader().e_machine != 0)
     Y->Header.Machine = ELFYAML::ELF_EM(Obj.getHeader().e_machine);
-  Y->Header.Flags = Obj.getHeader().e_flags;
+  if (Obj.getHeader().e_flags != 0)
+    Y->Header.Flags = ELFYAML::ELF_EF(Obj.getHeader().e_flags);
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lamb-j wrote:

This line changed too it seems. We need a cast here now?

https://github.com/llvm/llvm-project/pull/151094