Don't truncate the log file in the SIGHUP handler.

Logging is re-initialized by reload_config() now.
And truncation is wrong anyways: A syslog mechanism will
move the current log file and the reopen-action will just
create a new empty log file upon SIGHUP.

Michael

src/child.c

@@ -429,8 +429,6 @@ void child_main_loop (void)
 
                 /* Handle log rotation if it was requested */
                 if (received_sighup) {
-                        truncate_log_file ();
-
                         reload_config ();
 
 #ifdef FILTER_ENABLE