[clang] [clang] Fix TemplateInstantiator crash transforming loop hint argument (PR #172289)

[Erich Keane via cfe-commits]

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@@ -2197,19 +2197,23 @@ TemplateInstantiator::TransformLoopHintAttr(const LoopHintAttr *LH) {
 
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erichkeane wrote:

Patch needs a release note

https://github.com/llvm/llvm-project/pull/172289