[wp-trac] [WordPress Trac] #43005: JavaScript error Cannot read property 'action' of null on chrome

[WordPress Trac]

#43005: JavaScript error Cannot read property 'action' of null on chrome
-------------------------------------+-----------------------------
 Reporter:  manikmist09              |       Owner:  SergeyBiryukov
     Type:  defect (bug)             |      Status:  closed
 Priority:  normal                   |   Milestone:  4.9.3
Component:  Upgrade/Install          |     Version:  4.6
 Severity:  normal                   |  Resolution:  fixed
 Keywords:  has-patch needs-refresh  |     Focuses:  javascript
-------------------------------------+-----------------------------
Changes (by SergeyBiryukov):

 * owner:   => SergeyBiryukov
 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [changeset:"42604"]:
 {{{
 #!CommitTicketReference repository="" revision="42604"
 Upgrade/Install: In `postMessage` events handler, check for `message`
 object existence before checking its `action` property.

 Props manikmist09.
 Fixes #43005.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/43005#comment:11>
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