avoid warnings or exceptions
Merge pull request #10 from cordoval/10-fix-labels-and-other-fields-that-not-always-exist

merge #10 fix labels and other fields that not always exist (cordoval)

This PR was merged into gushphp:master branch.

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Commits
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466c09854640bc12222685fb5b0460dffd2fb79d avoid warnings or exceptions (cordoval)