[llvm] [yaml2obj] Don't use uninitialized Type (PR #123274)

[James Henderson via llvm-commits]

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@@ -454,3 +454,19 @@ Sections:
 # LINK-NEXT:   [ 2] .ref.first PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] [[#%x,]]      1
 # LINK-NEXT:   [ 3] .ref.last  PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] [[#%x,]]      4
 # LINK-NEXT:   [ 4] .shstrtab
+
+# Must not crash under Msan.
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jh7370 wrote:

I think this comment is unnecessary - it's implicit that tests shouldn't fail under sanitizers. What would be useful would be saying what's interesting about this case, namely that unrecognised section `Type` fields are handled sensibly.

https://github.com/llvm/llvm-project/pull/123274