[clang-tools-extra] [clang-tidy] fix compilation by disambiguating equality operator (PR #147048)

[Gregor Jasny via cfe-commits]

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@@ -144,7 +144,8 @@ TaggedUnionMemberCountCheck::getNumberOfEnumValues(const EnumDecl *ED) {
 
   if (EnableCountingEnumHeuristic && LastEnumConstant &&
       isCountingEnumLikeName(LastEnumConstant->getName()) &&
-      (LastEnumConstant->getInitVal() == (EnumValues.size() - 1))) {
+      (LastEnumConstant->getInitVal() ==
+       llvm::APSInt::getUnsigned(EnumValues.size() - 1u))) {
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gjasny wrote:

>From the error: `(with operand types 'llvm::APSInt' and 'unsigned long')` I was assuming that the `(EnumValues.size() - 1)` gets converted to an `unsigned long`

https://github.com/llvm/llvm-project/pull/147048