[wp-trac] [WordPress Trac] #21562: Twenty Twelve: Hide the "Show navigation" button when there is no navigation to show.

[WordPress Trac]

#21562: Twenty Twelve: Hide the "Show navigation" button when there is no
navigation to show.
---------------------------+-----------------------------
 Reporter:  cfinke         |      Owner:
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Bundled Theme  |    Version:
 Severity:  minor          |   Keywords:
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 When loading Twenty Twelve on an iPhone, the "Show navigation" button is
 visible even when tapping it will have no effect. It should be hidden (or
 never output) if it will be impotent.

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Ticket URL: <http://core.trac.wordpress.org/ticket/21562>
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