Re: fix typos in comments

Andres Freund <andres@anarazel.de> writes:
> On 2015-04-26 12:53:30 -0400, Tom Lane wrote:
>> Hm.  My dictionary says that "therefor" is archaic, but to my eye it
>> looks just wrong.  Certainly no modern writer would spell it like that.

> Mine said that it's still common in some circles, particularly the law,
> so I thought I'd leave it alone.  I don't have that much of a 'feeling'
> for english, strangely enough.

Well, a quick grep says that our source tree contains 2 occurrences of
"therefor" (in pqcomm.c and geqo_erx.c), versus 700+ occurrences of
"therefore".  So I'd be inclined to standardize on the latter.
        regards, tom lane