Fix crashing zotonic_status after merging #6.
Fix crashing zotonic_status after merging #6.

z_db:select() cannot deal with a non-existing database connection.

erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta,erlanger-ru/erlanger-ru.meta