Bug 858680, Prevent unused variable warning on opt builds, r=bustage.

--HG--
extra : rebase_source : abec6bc1896d17d07abe3a885861002c5762d6ef

dom/indexedDB/ActorsParent.cpp

@@ -8170,20 +8170,24 @@ struct QuotaClient::MultipleMaintenanceInfo final
    : MaintenanceInfoBase(aGroup, aOrigin, aPersistenceType)
    , mDatabasePaths(Move(aDatabasePaths))
   {
+#ifdef DEBUG
     MOZ_ASSERT(!mDatabasePaths.IsEmpty());
     for (const nsString& databasePath : mDatabasePaths) {
       MOZ_ASSERT(!databasePath.IsEmpty());
     }
+#endif
   }
 
   MultipleMaintenanceInfo(MultipleMaintenanceInfo&& aOther)
     : MaintenanceInfoBase(Move(aOther))
     , mDatabasePaths(Move(aOther.mDatabasePaths))
   {
+#ifdef DEBUG
     MOZ_ASSERT(!mDatabasePaths.IsEmpty());
     for (const nsString& databasePath : mDatabasePaths) {
       MOZ_ASSERT(!databasePath.IsEmpty());
     }
+#endif
   }
 
   MultipleMaintenanceInfo(const MultipleMaintenanceInfo& aOther) = delete;