Catch errors when failing to write logs to database

src/NzbDrone.Core/Instrumentation/DatabaseTarget.cs

@@ -1,4 +1,5 @@
 using System;
+using NLog.Common;
 using NLog.Config;
 using NLog;
 using NLog.Layouts;
@@ -79,8 +80,16 @@ namespace NzbDrone.Core.Instrumentation
             
             log.Level = logEvent.Level.Name;
 
+            try
+            {
                 _repository.Insert(log);
             }
+            catch (Exception ex)
+            {
+                InternalLogger.Error("Unable to save log event to database: {0}", ex);
+                throw;
+            }
+        }
 
         public void Handle(ApplicationShutdownRequested message)
         {