loplugin:unusedenumconstants in vcl

- drop TTCR_GLYPHSEQ
- drop ImageType::Invalid
- give preedit_data_t a default constructor, so my plugin spots that the
eState field is being initalised to DontKnow effectively by a memset
- document ToolbarIconSize::Small as unused, but can't remove since
it might be stored in a user-setting somewhere

Change-Id: I94b34bba83a04de16f95e4faec95b4bd29f3c652
Reviewed-on: https://gerrit.libreoffice.org/33887
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/vcl/settings.hxx b/include/vcl/settings.hxx
index 343559d7e080..7fef45785e27 100644
--- a/include/vcl/settings.hxx
+++ b/include/vcl/settings.hxx
@@ -227,7 +227,7 @@ namespace o3tl
 enum class ToolbarIconSize
 {
     Unknown      = 0,
-    Small        = 1,
+    Small        = 1, // unused
     Large        = 2,
     Size32       = 3,
 };