[wp-trac] [WordPress Trac] #36382: Document both return values of get_current_screen

[WordPress Trac]

#36382: Document both return values of get_current_screen
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 Reporter:  screamingdev  |      Owner:
     Type:  enhancement   |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  4.4.2
 Severity:  normal        |   Keywords:
  Focuses:  docs          |
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 The documentation only shows the return type for success cases.
 But it can also be null on failure.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36382>
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