[Dbix-class] [PATCH] in_storage return value

[Przemyslaw Kuznicki]

Hi all,

According to the documentation for the in_storage method in DBIx::Class::Row 
http://search.cpan.org/~ribasushi/DBIx-Class/lib/DBIx/Class/Row.pm#in_storage

in_storage method should "Returns: 1|0"

In reality when row is not stored yet (e.g. returned by find_or_new method) or has been deleted the value returned by in_storage is undef.

Patch for DBIx/Class/Row.pm and tests attached.

Best Regards
Przemyslaw Kuznicki
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