Update sys_timer.cpp

rpcs3/Emu/Cell/lv2/sys_timer.cpp

@@ -144,14 +144,17 @@ void lv2_timer_thread::operator()()
 
 		for (const auto& timer : timers)
 		{
-			if (lv2_obj::check(timer))
+			while (lv2_obj::check(timer))
+			{
+				if (const u64 advised_sleep_time = timer->check(_now))
 				{
-				const u64 advised_sleep_time = timer->check(_now);
-
 					if (sleep_time > advised_sleep_time)
 					{
 						sleep_time = advised_sleep_time;
 					}
+
+					break;
+				}
 			}
 		}
 	}