[Dbix-class] bug in CascadeActions->update for might_have that doesn't have one

[Matt S Trout]

Mark Hedges wrote:
> 
> On Fri, 7 Apr 2006, Mark Hedges wrote:
> 
>> -    $_->update for $self->$rel;
>> +    $_->update for grep {$_} $self->$rel;
> 
> 
> Sorry, this is more efficient:
> 
>  $_->update for grep { defined } $self->$rel;

Or even

grep defined, $self->$rel;

which is what just went into trunk :)

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