[update] 信号优化，时间列表显式返回空数组

signal-optimize-service/src/main/java/net/wanji/opt/service/impl/DiagnoServiceImpl.java

@@ -223,6 +223,9 @@ public class DiagnoServiceImpl implements DiagnoService {
             // 构造调整时间列表
             List<SchemeOptVO.PhaseOptTime> phaseOptTimeList = buildPhaseOptTimeList(collect, schemeId);
             schemeOptVO.setPhaseOptTimeList(phaseOptTimeList);
+        } else {
+            List<SchemeOptVO.PhaseOptTime> phaseOptTimeList = new ArrayList<>();
+            schemeOptVO.setPhaseOptTimeList(phaseOptTimeList);
         }
         return schemeOptVO;
     }