电源控制 修正自检判断条件

app/src/main/cpp/GPIOControl.cpp

@@ -356,9 +356,9 @@ bool GpioControl::GetSelftestStatus(time_t wait_time)
     std::vector<ITEM>::iterator it;
     for (it = m_items.begin(); it != m_items.end(); ++it)
     {
-        if (it->cmd == cmd && (now - it->openTime >= wait_time))
+        if (it->cmd == cmd && it->openTime!=0 && (now - it->openTime >= wait_time))
         {
-            return true;
+            return true;//自检完成
         }
     }
     return false;