Fix a bug when linking an already existing Bug object to a Bucket
Fix a bug when linking an already existing Bug object to a Bucket

cihatix/FuzzManager,MozillaSecurity/FuzzManager,lazyparser/FuzzManager,lazyparser/FuzzManager,sigma-random/FuzzManager,lazyparser/FuzzManager,MozillaSecurity/FuzzManager,sigma-random/FuzzManager,MozillaSecurity/FuzzManager,cihatix/FuzzManager,MozillaSecurity/FuzzManager,sigma-random/FuzzManager,sigma-random/FuzzManager,lazyparser/FuzzManager,cihatix/FuzzManager,cihatix/FuzzManager