Merge pull request #150 from credfeto/bugfix/149-index-out-of-range-c…

…reating-event-id

#149 - Fixed index out of range issue with negative ids

src/Serilog.Extensions.Logging/Extensions/Logging/SerilogLogger.cs

@@ -139,7 +139,7 @@ internal static LogEventProperty CreateEventIdProperty(EventId eventId)
 
             if (eventId.Id != 0)
             {
-                if (eventId.Id < LowEventIdValues.Length)
+                if (eventId.Id >= 0 && eventId.Id < LowEventIdValues.Length)
                     // Avoid some allocations
                     properties.Add(LowEventIdValues[eventId.Id]);
                 else