[lld] [lld-macho] Category Merger: add support for addrsig references (PR #90903)

[Vincent Lee via llvm-commits]

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@@ -546,9 +552,10 @@ void ObjcCategoryMerger::tryEraseDefinedAtIsecOffset(
   if (!sym)
     return;
 
-  if (auto *cisec = dyn_cast_or_null<ConcatInputSection>(sym->isec()))
+  if (auto *cisec = dyn_cast_or_null<ConcatInputSection>(sym->isec())) {
     eraseISec(cisec);
-  else if (auto *csisec = dyn_cast_or_null<CStringInputSection>(sym->isec())) {
+  } else if (auto *csisec =
+                 dyn_cast_or_null<CStringInputSection>(sym->isec())) {
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thevinster wrote:

Is this formatting change necessary? 

https://github.com/llvm/llvm-project/pull/90903