BitBucketStatus: address Use of uninitialized value in numeric eq (==)

Dependencies

• [2] 5WNGKHLZ Plugins: Add isEnabled method
• [3] OI2FTIMY Add BitBucket plugin

Change contents

• replacement in src/lib/Hydra/Plugin/BitBucketStatus.pm at line 13
  [2.37]→[2.37:97](∅→∅)
  − return $self->{config}->{enable_bitbucket_status} == 1;
  [2.37]

  [2.97]
  + return defined($self->{config}->{enable_bitbucket_status}) && $self->{config}->{enable_bitbucket_status} == 1;