[clang-tools-extra] [clang-tidy] Fix assert failure in modernize-use-std-format when args are in macros (PR #176684)

[via cfe-commits]

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@@ -800,10 +800,11 @@ void FormatStringConverter::applyFixes(DiagnosticBuilder &Diag,
   }
 
   for (const auto &[ArgIndex, Replacement] : ArgFixes) {
-    const SourceLocation AfterOtherSide =
-        utils::lexer::findNextTokenSkippingComments(Args[ArgIndex]->getEndLoc(),
-                                                    SM, LangOpts)
-            ->getLocation();
+    const auto NextToken = utils::lexer::findNextTokenSkippingComments(
+        Args[ArgIndex]->getEndLoc(), SM, LangOpts);
+    if (!NextToken)
+      continue;
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zeyi2 wrote:

> We can probably land "easy" part of unchecked-optional-access that can prevent real crashes.

I think that PR is almost "finished", IMO after reverting the last commit and resolving conflicts it would be ready for merging? I will work on it later.

https://github.com/llvm/llvm-project/pull/176684