The value would otherwise be assigned outside of it and in some cases not
at all. Now all DCBs (apart from internal ones) have a valid SERVICE
pointer.
The SERV_LISTENER pointer should not be in the DCBs but in the
session. This way the listener is an attribute of a session instead of a
connection. If this is implemented, the authenticator data can be more
easily shared.
The class is still mostly the same as the old C version but it now uses
std::string instead of char pointers. Changed configuration default values
so that the parameters passed to the listener allocation are always valid.
See script directory for method. The script to run in the top level
MaxScale directory is called maxscale-uncrustify.sh, which uses
another script, list-src, from the same directory (so you need to set
your PATH). The uncrustify version was 0.66.
With the changes to the DCB handling, the service pointer of a client DCB
must always be assigned.
Also removed the unnecessary parentheses around the comparison.
