Add property check on Server power operations page

Check for LastResetTime value before attempting to create a
Date object. The error causes the page to hang when attempting
different actions from the page.

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: Ia2d754e430d1d3ad69f04d3c350c68ca35fa5375
diff --git a/src/store/modules/Control/ControlStore.js b/src/store/modules/Control/ControlStore.js
index 82940f8..5f532d0 100644
--- a/src/store/modules/Control/ControlStore.js
+++ b/src/store/modules/Control/ControlStore.js
@@ -54,8 +54,10 @@
         .get('/redfish/v1/Systems/system')
         .then((response) => {
           const lastReset = response.data.LastResetTime;
-          const lastPowerOperationTime = new Date(lastReset);
-          commit('setLastPowerOperationTime', lastPowerOperationTime);
+          if (lastReset) {
+            const lastPowerOperationTime = new Date(lastReset);
+            commit('setLastPowerOperationTime', lastPowerOperationTime);
+          }
         })
         .catch((error) => console.log(error));
     },