D9829: Don't create 2 msgbox (one of them crashes) when can't change rights

[Jaime Torres Amate]

jtamate created this revision.
jtamate added reviewers: Frameworks, anthonyfieroni, dfaure.
Restricted Application added a project: Frameworks.
jtamate requested review of this revision.

REVISION SUMMARY
  When copying files in a filesystem where the permissions can not be
  changed do not generate two dialogs and do not crash when pressing
  "skip all".
  
  This is the revival of https://phabricator.kde.org/D9005
  Finally, it is needed.

TEST PLAN
  Copying several files to a file system where the rights can't be changed,
  two dialogs asking for "Retry Skip Skip all Abort" where shown.
  Pressing Skip all crashed dolphin.
  Now only one dialog is shown and no crash pressing skip all.

REPOSITORY
  R241 KIO

BRANCH
  filecopy (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D9829

AFFECTED FILES
  src/core/filecopyjob.cpp

To: jtamate, #frameworks, anthonyfieroni, dfaure
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