if()/BUG conversion to BUG_ON must be avoided when there's side effect
in condition. The reason being BUG_ON won't execute the condition when
CONFIG_BUG is not defined.
Inspired-by: NJ. Bruce Fields <bfields@fieldses.org>
Suggested-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Acked-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NMichal Marek <mmarek@suse.cz>