LV2: Race condition fixup

rpcs3/Emu/Cell/lv2/sys_event.cpp

@@ -524,6 +524,7 @@ error_code sys_event_queue_receive(ppu_thread& ppu, u32 equeue_id, vm::ptr<sys_e
 				if (!atomic_storage<ppu_thread*>::load(queue->pq))
 				{
 					// Waiters queue is empty, so the thread must have been signaled
+					queue->mutex.lock_unlock();
 					break;
 				}
 

rpcs3/Emu/Cell/lv2/sys_event_flag.cpp

@@ -243,6 +243,7 @@ error_code sys_event_flag_wait(ppu_thread& ppu, u32 id, u64 bitptn, u32 mode, vm
 				if (!atomic_storage<ppu_thread*>::load(flag->sq))
 				{
 					// Waiters queue is empty, so the thread must have been signaled
+					flag->mutex.lock_unlock();
 					break;
 				}
 

rpcs3/Emu/Cell/lv2/sys_lwmutex.cpp

@@ -237,6 +237,7 @@ error_code _sys_lwmutex_lock(ppu_thread& ppu, u32 lwmutex_id, u64 timeout)
 				if (!mutex->load_sq())
 				{
 					// Sleep queue is empty, so the thread must have been signaled
+					mutex->mutex.lock_unlock();
 					break;
 				}
 

rpcs3/Emu/Cell/lv2/sys_mutex.cpp

@@ -258,6 +258,7 @@ error_code sys_mutex_lock(ppu_thread& ppu, u32 mutex_id, u64 timeout)
 				if (!atomic_storage<ppu_thread*>::load(mutex->control.raw().sq))
 				{
 					// Waiters queue is empty, so the thread must have been signaled
+					mutex->mutex.lock_unlock();
 					break;
 				}
 

rpcs3/Emu/Cell/lv2/sys_rwlock.cpp

@@ -199,6 +199,7 @@ error_code sys_rwlock_rlock(ppu_thread& ppu, u32 rw_lock_id, u64 timeout)
 				if (!atomic_storage<ppu_thread*>::load(rwlock->rq))
 				{
 					// Waiters queue is empty, so the thread must have been signaled
+					rwlock->mutex.lock_unlock();
 					break;
 				}