Related: tdf#155708 Clean-up left over nCloseResponseToJustHide

cont int variable in dialog header.

Follow up (Clean-up) of a5c61b143d53bb10430b8a486874856c16a2d86c

Change-Id: I13ddbad581ee920a72726e18ccb9e7daf4eb7887
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/154164
Tested-by: Jenkins
Reviewed-by: Balazs Varga <balazs.varga.extern@allotropia.de>
diff --git a/include/vcl/toolkit/dialog.hxx b/include/vcl/toolkit/dialog.hxx
index 640204a..5e11d2f 100644
--- a/include/vcl/toolkit/dialog.hxx
+++ b/include/vcl/toolkit/dialog.hxx
@@ -58,8 +58,6 @@ private:
    bool            mbModalMode;
    InitFlag        mnInitFlag; // used for deferred init

    const int nCloseResponseToJustHide = -42;

    VclPtr<VclButtonBox> mpActionArea;
    VclPtr<VclBox>       mpContentArea;