[clang] Move Sema::WarnedStackExhausted from public to private. (llvm#111799)

Author: bricknerb

clang/include/clang/Sema/Sema.h

@@ -872,8 +872,6 @@ class Sema final : public SemaBase {
   /// For example, user-defined classes, built-in "id" type, etc.
   Scope *TUScope;
 
-  bool WarnedStackExhausted = false;
-
   void incrementMSManglingNumber() const {
     return CurScope->incrementMSManglingNumber();
   }
@@ -1185,6 +1183,8 @@ class Sema final : public SemaBase {
   std::optional<std::unique_ptr<DarwinSDKInfo>> CachedDarwinSDKInfo;
   bool WarnedDarwinSDKInfoMissing = false;
 
+  bool WarnedStackExhausted = false;
+
   Sema(const Sema &) = delete;
   void operator=(const Sema &) = delete;