[clang] [Clang] Fix the instantiation of return type requirements in lambda bodies (PR #76967)

[via cfe-commits]

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@@ -843,6 +843,9 @@ Bug Fixes to C++ Support
 - Fix crash when parsing nested requirement. Fixes:
   (`#73112 <https://github.com/llvm/llvm-project/issues/73112>`_)
 
+- Fixed a crash caused by using return type requirement in a lambda. Fixes:
+  (`#64607 <https://github.com/llvm/llvm-project/issues/64607>`_)
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LYP951018 wrote:

Thanks for review!
I have added the list of related bugs and improved the comments.

https://github.com/llvm/llvm-project/pull/76967