kern: fix bug in KConditionVariable::SignalImpl

libraries/libmesosphere/source/kern_k_condition_variable.cpp

@@ -132,7 +132,7 @@ namespace ams::kern {
 
             can_access = cpu::CanAccessAtomic(address);
             if (AMS_LIKELY(can_access)) {
-                UpdateLockAtomic(std::addressof(prev_tag), address, own_tag, ams::svc::HandleWaitMask);
+                can_access = UpdateLockAtomic(std::addressof(prev_tag), address, own_tag, ams::svc::HandleWaitMask);
             }
         }