Added 'an' to wording when database is in an inconsistent state

When I get the error message "Database 'default' is in inconsistent state" it bugs me. Here is to what I believe is the proper english that should be in the error message. Small commit, but hope it helps. 

"Database 'default' is in an inconsistent state" if you guys think that sounds a little off I know that swapping "an" with "a" would be the correct use of a conjunction before the adjective of "inconsistent" I just thought "an" sounded better.