Update logrotate_urbackupsrv

[francoisPE]

I think those parenthesis would be needed !
See https://forums.urbackup.org/t/logrotate-script-error-under-systemd-distributions/14232/6

[francoisPE]

I propose that PR

[uroni]

Usually && has precedence over ||. Is that not the case in bash?

[PhillipOConnor]

I believe && does not have precedence over || in the context as it is a list, not an expression. From "man bash":

A list is a sequence of one or more pipelines separated by one of the operators ;, &, &&, or ||, and optionally terminated by one of ;, &, or newline.
Of these list operators, && and || have equal precedence, followed by ; and &, which have equal precedence.
AND and OR lists are sequences of one or more pipelines separated by the && and || control operators, respectively. AND and OR lists are executed with left associativity.

In the context of an expression && does have precedence over ||