tdf#124893 Validity check on new dialog creation.

Change-Id: I5f94c8204a4c35470e891eb89cfbe74aad852bf4
Reviewed-on: https://gerrit.libreoffice.org/71084
Tested-by: Jenkins
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>

cui/source/options/optdict.cxx

@@ -100,6 +100,9 @@ SvxNewDictionaryDialog::SvxNewDictionaryDialog(weld::Window* pParent)
     , m_xExceptBtn(m_xBuilder->weld_check_button("except"))
     , m_xOKBtn(m_xBuilder->weld_button("ok"))
 {
+    // Prevent creation of dictionary without a name.
+    m_xOKBtn->set_sensitive(false);
+
     // install handler
     m_xNameEdit->connect_changed(LINK(this, SvxNewDictionaryDialog, ModifyHdl_Impl));
     m_xOKBtn->connect_clicked(LINK(this, SvxNewDictionaryDialog, OKHdl_Impl));