Fix "field 'macos_qos_class' will be initialized after field 'unlimit_coredumps'" warning.

Harmless, but annoying. :D

PiperOrigin-RevId: 243970599
diff --git a/src/main/cpp/startup_options.h b/src/main/cpp/startup_options.h
index 168f212..70b9e4d 100644
--- a/src/main/cpp/startup_options.h
+++ b/src/main/cpp/startup_options.h
@@ -311,14 +311,14 @@
   // their origin. This is populated by ProcessArgs.
   std::vector<RcStartupFlag> original_startup_options_;
 
-  // Whether to raise the soft coredump limit to the hard one or not.
-  bool unlimit_coredumps;
-
 #if defined(__APPLE__)
   // The QoS class to apply to the Bazel server process.
   qos_class_t macos_qos_class;
 #endif
 
+  // Whether to raise the soft coredump limit to the hard one or not.
+  bool unlimit_coredumps;
+
  protected:
   // Constructor for subclasses only so that site-specific extensions of this
   // class can override the product name.  The product_name must be the