vpopmail 5.0 POP_AUTH_OPEN_RELAY bug: uninitialized variable used

[Daniel Drown]

vpopmail.c, function tcprules_open, line 2067 copies the uninitialized
variable template to bin2:
strncat( bin2, template, BUFF_SIZE);

That line should probably be removed.

Also, the relay_template variable seems to no longer be used in that file.