Update TDEL10n module

+ Fix tde_l10n_prepare_xml when processing a line
  that contains only word "no".

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 8f3b50336f)

modules/TDEL10n.cmake

@@ -775,12 +775,12 @@ function( tde_l10n_prepare_xml )
 
       # drop empty tag on single line
       if( _xml_line_prefix AND _xml_line_suffix AND _xml_tag_empty )
-        set( _xml_l10n "${_xml_l10n}" )
+        # skip empty string for translation
 
       # add current tag to output
       else( )
         set( _xml_l10n "${_xml_l10n}${_xml_line_prefix}" )
-        if( _xml_line OR ( _xml_line_suffix AND _xml_tag_empty ) )
+        if( NOT "${_xml_line}" STREQUAL "" OR ( _xml_line_suffix AND _xml_tag_empty ) )
           set( _xml_l10n "${_xml_l10n}\"${_xml_line}\"" )
         endif( )
         set( _xml_l10n "${_xml_l10n}${_xml_line_suffix}" )