Fix bad formatting of line number when a service fails to load

[JamiKettunen]

It was adding line X directly after the service file path without any kind of separation. As an example the following:

dinit: Error in service description for 'early-test' (file /etc/dinit.d/early-testline 1): badly formed line.
dinit: Error in service description for 'early-test': setting 'options' (file /etc/dinit.d/early-testline 4): unknown option: invalid

would become:

dinit: Error in service description for 'early-test' (file /etc/dinit.d/early-test, line 1): badly formed line.
dinit: Error in service description for 'early-test': setting 'options' (file /etc/dinit.d/early-test, line 4): unknown option: invalid

after this change.

[mobin-2008]

Thanks, Looks Good.