Simple cleanup, but I also changed the value of the dlevel parameter passed

Simple cleanup, but I also changed the value of the dlevel parameter passed
to open_socket_in() from within the open_sockets() function.  This has some
effect on the way port numbers are assigned.  Basically, if we use the -r
switch we are saying 'use port 137'.  If we can't do that, there should
be an error message and a failure.  If we don't use -r then we simply select
the first available port.  The way it was working, if we selected -r and
port 137 was in use, wierd things would happen as open_socket_in() tried to
find another port.
(This used to be commit f09cb41ad86b233253758de7ef2781589ac07b86)