[tor-bugs] #31573 [Applications/Tor Browser]: Uncaught exception in SessionStore.jsm with Tor Browser based on ESR 68

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#31573: Uncaught exception in SessionStore.jsm with Tor Browser based on ESR 68
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 Reporter:  gk                                   |          Owner:
                                                 |  pospeselr
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff68-esr, tbb-9.0-issues, tbb-       |  Actual Points:
  regression, tbb-9.0.1-can                      |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by pospeselr):

 So this is happening because the {{{dom.push.enabled}}} pref is false, so
 {{{PushComponents.jsm}}} throws {{{NS_ERROR_NOT_AVAILABLE}}} when trying
 to access the {{{PushService}}} singleton. I *think* we can solve this by
 just swallowing the exception, but I need to look through the code a bit
 more to be sure.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31573#comment:6>
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