[KERNEL32] GetSystemPowerStatus(): Set the BATTERY_FLAG_CRITICAL flag if the battery life gets lower than 5 percent.

dll/win32/kernel32/client/power.c

···
             PowerStatus->BatteryLifePercent = 100;
         }
 
+        if (PowerStatus->BatteryLifePercent <= 4)
+            PowerStatus->BatteryFlag |= BATTERY_FLAG_CRITICAL;
+
         if (PowerStatus->BatteryLifePercent <= 32)
             PowerStatus->BatteryFlag |= BATTERY_FLAG_LOW;