D16361: Edit Profile Dialog: Fix "Smooth fonts" preview

[Mariusz Glebocki]

mglb created this revision.
mglb added a reviewer: Konsole.
mglb added a project: Konsole.
mglb requested review of this revision.

REVISION SUMMARY
  `setStyleHint()` resets styleStrategy (which has information about
  font smoothing) when the second argument is missing.

TEST PLAN
  - Open: Settings → Edit current profile → Appearance
  - Unselect/select "Smooth fonts" checkbox
  
  Actual result: text rendering in the main terminal window does not
  change.
  Expected result: text rendering in the main terminal window should use
  smoothing or not, depending on the checkbox state. The option change
  should be visible instantly, without clicking OK or Apply.

REPOSITORY
  R319 Konsole

BRANCH
  arc/Edit-Profile-Dialog-Fix-Smooth-fonts-preview (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D16361

AFFECTED FILES
  src/TerminalDisplay.cpp

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