[clang] [clang] Don't crash when -Wformat-signedness specified (PR #162049)

[Erich Keane via cfe-commits]

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@@ -440,6 +440,7 @@ Bug Fixes to C++ Support
   ``__builtin_addressof``, and related issues with builtin arguments. (#GH154034)
 - Fix an assertion failure when taking the address on a non-type template parameter argument of
   object type. (#GH151531)
+- Fix an assertion failure of format string signedness check when ``-Wformat-signedness`` (#GH161075).
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erichkeane wrote:

I thought that the report said this is trunk only?  If this hasn't been released, teh release note isn't really meaningful.

https://github.com/llvm/llvm-project/pull/162049