kcrash: Depends on libxcb
kcrash: Depends on libxcb

Unfortunately kcrash demands libxcb, otherwise the build will fail
in kcrash.cpp, line 271 because the function won't return.

Apparently there is no ifdef for Wayland, it appears kcrash works
only on X11, macOS and Windows.

Signed-off-by: Pier Luigi Fiorini <295fa01708b2fee29c68701c2be812b51a3cff23@gmail.com>

schnitzeltony/meta-qt5-extra,schnitzeltony/meta-qt5-extra,schnitzeltony/meta-qt5-extra