turn #error into static_assert

Change-Id: Iddd4b344d77e43866975ce28797ff643055bfd04
Reviewed-on: https://gerrit.libreoffice.org/53160Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

cui/source/dialogs/hangulhanjadlg.cxx

@@ -1750,9 +1750,7 @@ namespace svx
         m_aDeletePB->SetClickHdl( LINK( this, HangulHanjaEditDictDialog, DeletePBPushHdl ) );
         m_aDeletePB->Enable( false );
 
-    #if( MAXNUM_SUGGESTIONS <= 4 )
-        #error number of suggestions should not under-run the value of 5
-    #endif
+        static_assert(MAXNUM_SUGGESTIONS > 5, "number of suggestions should not under-run the value of 5");
 
         Link<ScrollBar*,void>  aScrLk( LINK( this, HangulHanjaEditDictDialog, ScrollHdl ) );
         m_aScrollSB->SetScrollHdl( aScrLk );