[wp-trac] [WordPress Trac] #64675: Cleanup: remove unused variable $ext2 in wp_unique_filename function

[WordPress Trac]

#64675: Cleanup: remove unused variable $ext2 in wp_unique_filename function
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 Reporter:  Soean         |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 The usage of `$ext2` in `wp_unique_filename()` was removed in
 https://core.trac.wordpress.org/changeset/51653

 So we can remove this initialisation.
 {{{#!php
 <?php
 $ext2 = null;
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/64675>
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