Enable subset filter when not in search mode

Change-Id: If8bb1471cb09599d514ca2fef963249309d6563a
Reviewed-on: https://gerrit.libreoffice.org/41357Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Akshay Deep <akshaydeepiitr@gmail.com>

cui/source/dialogs/cuicharmap.cxx

@@ -694,7 +694,7 @@ void SvxCharacterMap::toggleSearchView(bool state)
     isSearchMode = state;
     m_pHexCodeText->SetReadOnly(state);
     m_pDecimalCodeText->SetReadOnly(state);
-    m_pSubsetLB->Disable(state);
+    m_pSubsetLB->Enable(!state);
 
     if(state)
     {