Fixed a bug on sendto_channel_butserv_me() function (src/send.c)

Fixed a bug on sendto_channel_butserv_me() function (src/send.c):
The bug causes Bahamut to hide mode and topic changes even if the channel isn't in auditorium mode.

Thanks to nt-spki for reporting this and thanks to srd for fixing it.

-Kobi.