coverity#1435684 deliberate 'Constant' variable guards dead code

Change-Id: I0a5b36ad781bfc76295e91131bdc073dac0d6ea2
Reviewed-on: https://gerrit.libreoffice.org/54585Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

cui/source/dialogs/SignSignatureLineDialog.cxx

@@ -147,7 +147,7 @@ void SignSignatureLineDialog::Apply()
     SfxObjectShell* pShell = SfxObjectShell::Current();
     pShell->SignSignatureLine(m_aSignatureLineId, m_xSelectedCertifate);
 
-    bool bSuccess = false; // TODO
+    const bool bSuccess = false; // TODO
 
     if (bSuccess)
     {