Added Finished flag after 15 seconds

prs.server/Engines/GPS/OEMConnection.cs

@@ -361,6 +361,7 @@ namespace PRSServer
             {
                 if (!readData)
                 {
+                    Finished = true;
                     Logger.Send(LogType.Error, "", "DEBUG: No data read for 15 seconds.");
                 }
             });