D17264: Fix crash when changing from blinking cursor to block cursor

[Martin Tobias Holmedahl Sandsmark]

sandsmark created this revision.
sandsmark added reviewers: Konsole, hindenburg.
Herald added a project: Konsole.
Herald added a subscriber: konsole-devel.
sandsmark requested review of this revision.

REVISION SUMMARY
  When using the new fancy escape codes to change the cursor, we might hit an assert if the cursor was changed when the cursor was hidden by blinking.

TEST PLAN
  run:
  
  `printf '\e[ q'`
  
  and then when the cursor is invisible run:
  
  `printf '\e[2 q'`

REPOSITORY
  R319 Konsole

REVISION DETAIL
  https://phabricator.kde.org/D17264

AFFECTED FILES
  TerminalDisplay.cpp

To: sandsmark, #konsole, hindenburg
Cc: konsole-devel, #konsole, ngraham, maximilianocuria, hindenburg
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