Mark --ts-es-id-pid as safe

It merely changes the mapping of track IDs. This can be used along
with --audio-track-id which is already marked safe.

This should fix Debian #466323.

modules/demux/ts.c

@@ -146,6 +146,7 @@ vlc_module_begin ()
 
     add_string( "ts-extra-pmt", NULL, PMT_TEXT, PMT_LONGTEXT, true )
     add_bool( "ts-es-id-pid", true, PID_TEXT, PID_LONGTEXT, true )
+        change_safe()
     add_string( "ts-out", NULL, TSOUT_TEXT, TSOUT_LONGTEXT, true )
     add_integer( "ts-out-mtu", 1400, MTUOUT_TEXT,
                  MTUOUT_LONGTEXT, true )