[wp-trac] [WordPress Trac] #21321: Remove is_null() checks in apply_filters(), do_action(), et al.

[WordPress Trac]

#21321: Remove is_null() checks in apply_filters(), do_action(), et al.
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 Reporter:  nacin        |       Owner:  nacin
     Type:  enhancement  |      Status:  reopened
 Priority:  normal       |   Milestone:  Future Release
Component:  Plugins      |     Version:
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:  performance
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Comment (by DrewAPicture):

 @nacin: Do we still need to handle this?

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Ticket URL: <https://core.trac.wordpress.org/ticket/21321#comment:16>
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