These are mostly string casts, handling function's return value and some
weird warning about missing spaces on empty while loops.
These were reported by and fixed with Marcus Rueckert <darix@opensu.se>.
git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@904 726aef4b-f618-498e-8847-2d620e286838