[clang-tools-extra] [clang-tidy] Fix `modernize-use-constraints` crash on uses of nonstandard `enable_if`s (PR #152938)

[Baranov Victor via cfe-commits]

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@@ -136,6 +136,11 @@ Changes in existing checks
 - Improved :doc:`misc-header-include-cycle
   <clang-tidy/checks/misc/header-include-cycle>` check performance.
 
+- Fixed a :doc:`modernize-use-constraints
+  <clang-tidy/checks/modernize/use-constraints>` crash on uses of
+  nonstandard ``enable_if``s with a signature different from
+  ``std::enable_if`` (such as ``boost::enable_if``).
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vbvictor wrote:

I think we generally write
"Improved XXX check by fixing a crush on uses of ..."

https://github.com/llvm/llvm-project/pull/152938