Since qt is on C++17, it's possible too use the [[fallthrough]]
attribute instead of a // Fallthrough comment, that may be stripped by
compiler launchers (ccache/icecc), causing -Wimplicit-fallthrough
warnings.
Change-Id: Ic809cf4e95b2160fac591b3802fa123e705337cc
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
(cherry picked from commit 84537e6dc22030004c2aec7285641e721da627cf)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>