Bug 1296998 - Fix Wmaybe-uninitialized warning in nsJSEnvironment.cpp. r=smaug

MozReview-Commit-ID: J21IuAo8Udu

dom/base/nsJSEnvironment.cpp

@@ -1590,11 +1590,6 @@ nsJSContext::EndCycleCollectionCallback(CycleCollectorResults &aResults)
            NS_GC_DELAY - std::min(ccNowDuration, kMaxICCDuration));
   }
 
-  PRTime endCCTime;
-  if (sPostGCEventsToObserver) {
-    endCCTime = PR_Now();
-  }
-
   // Log information about the CC via telemetry, JSON and the console.
   Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_FINISH_IGC, gCCStats.mAnyLockedOut);
   Telemetry::Accumulate(Telemetry::CYCLE_COLLECTOR_SYNC_SKIPPABLE, gCCStats.mRanSyncForgetSkippable);
@@ -1687,7 +1682,8 @@ nsJSContext::EndCycleCollectionCallback(CycleCollectorResults &aResults)
              u"\"removed\": %lu } "
        u"}");
     nsString json;
-    json.Adopt(nsTextFormatter::smprintf(kJSONFmt.get(), endCCTime, ccNowDuration,
+
+    json.Adopt(nsTextFormatter::smprintf(kJSONFmt.get(), PR_Now(), ccNowDuration,
                                          gCCStats.mMaxSliceTime,
                                          gCCStats.mTotalSliceTime,
                                          gCCStats.mMaxGCDuration,