common: fix invalid log message

Log message complained about request processing even when
it finished request processing.

common/rabbitmq_gitea.go

@@ -99,12 +99,12 @@ func (gitea *RabbitMQGiteaEventsProcessor) ProcessRabbitMessage(msg RabbitMessag
 			req, err := ParseRequestJSON(reqType, msg.Body)
 			if err != nil {
 				LogError("Error parsing request JSON:", err)
-				return nil
 			} else {
 				LogDebug("processing req", req.Type)
 				//					h.Request = req
 				ProcessEvent(handler, req)
 			}
+			return nil
 		}
 	}