pg.Result.fields isn't always an array

[songsanli]

After this commit, pg.Result.fields will be an array only after pg.Result.addFields() is called.

However, pg.Result.addFields() is called only in the callback of RowDescription event, which is dispatched by pg in response to a SELECT, FETCH, etc query. If I send sqls like create SCHEMA hello, the pg.Result.fields will remain undefined. This behavior is different from the doc:

Every result will have a fields array.

Please heve a look. Thanks.

[brianc]

ahh dang yeah I need to fix that, sorry about the hassle there. I cut the end of my finger off on NYE 🤕 and juuust about healed up but haven't realy been able to type effectively up until yesterday...I'll get a change for backwards compatibility (+ a test for this) released ASAP (1-2 days 🤞 )