KConditionVariable/KAddressArbiter: no need for global compare thread

libraries/libmesosphere/source/kern_k_condition_variable.cpp

@@ -17,8 +17,6 @@
 
 namespace ams::kern {
 
-    constinit KThread g_cv_arbiter_compare_thread;
-
     namespace {
 
         ALWAYS_INLINE bool ReadFromUser(u32 *out, KProcessAddress address) {
@@ -179,9 +177,8 @@ namespace ams::kern {
         int num_waiters = 0;
         {
             KScopedSchedulerLock sl;
-            g_cv_arbiter_compare_thread.SetupForConditionVariableCompare(cv_key, -1);
 
-            auto it = this->tree.nfind(g_cv_arbiter_compare_thread);
+            auto it = this->tree.nfind_light({ cv_key, -1 });
             while ((it != this->tree.end()) && (count <= 0 || num_waiters < count) && (it->GetConditionVariableKey() == cv_key)) {
                 KThread *target_thread = std::addressof(*it);