Don't use !! but != 0/NULL to force boolean evaluation.

Andres Freund <andres@anarazel.de>

Commit: 1a7a43672bf2939dda93a27d498349e7a4aa3c14
Author: Andres Freund <andres@anarazel.de>
Date: 2016-03-27T16:10:19Z
Releases: 9.6.0
Don't use !! but != 0/NULL to force boolean evaluation.

I introduced several uses of !! to force bit arithmetic to be boolean,
but per discussion the project prefers != 0/NULL.

Discussion: CA+TgmoZP5KakLGP6B4vUjgMBUW0woq_dJYi0paOz-My0Hwt_vQ@mail.gmail.com

Files