scripts/coccinelle/misc/bugon.cocci: update bug_on conversion warning
scripts/coccinelle/misc/bugon.cocci: update bug_on conversion warning

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: J. Bruce Fields <51738506c1b2ccb0761f23bdc612c93babf738ea@fieldses.org>
Suggested-by: Julia Lawall <3d4a3affaf9163789962e9770780389962bda29d@lip6.fr>
Acked-by: Julia Lawall <3d4a3affaf9163789962e9770780389962bda29d@lip6.fr>
Signed-off-by: Fabian Frederick <3efd2a027b14fd890cd23a9ef6d1134b4e5ad850@skynet.be>
Signed-off-by: Michal Marek <0c835876a532a476f30fdb1f6e963bae6c5a1a04@suse.cz>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs