[clang] [Clang] Never consider conversion from single-element braced-init-list perfect (PR #138307)

[Younan Zhang via cfe-commits]

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@@ -360,6 +360,13 @@ class Sema;
     LLVM_PREFERRED_TYPE(bool)
     unsigned ObjCLifetimeConversionBinding : 1;
 
+    /// Whether the source expression was originally a single element
+    /// braced-init-list. Such a conversion is not a perfect match,
+    /// as we prefer a std::list_initializer constructor over an exact match
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zyn0217 wrote:

`std::initializer_list` :)

https://github.com/llvm/llvm-project/pull/138307