[llvm] [Support] Fix copy-paste errors in YAMLTraits.h (PR #157022)

[Kazu Hirata via llvm-commits]

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@@ -406,19 +406,19 @@ template <class T> struct has_MappingValidateTraits<T, EmptyContext> {
 
 // Test if MappingContextTraits<T>::enumInput() is defined on type T.
 template <class T, class Context> struct has_MappingEnumInputTraits {
-  using Signature_validate = void (*)(class IO &, T &);
+  using Signature_enumInput = void (*)(class IO &, T &);
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kazutakahirata wrote:

@kuhar Let me do that as a follow-up.  The problem is that the `Signature_fooBar` style is used consistently in many YAML traits.  Fixing the two cases alone would make things inconsistent.

https://github.com/llvm/llvm-project/pull/157022