Question about function SwAttrSet::GetPresentation (sw/source/ui/utlui/attrdesc.cxx)

Hello,

By looking in the last fix commits, I sometimes "opengrok" to see if the
same kind of initial problem solved by the fix could be found.

Then I read this code :
     71 // query the attribute descriptions
     72 void SwAttrSet::GetPresentation(
     73         SfxItemPresentation ePres,
     74         SfxMapUnit eCoreMetric,
     75         SfxMapUnit ePresMetric,
     76         String &rText ) const
     77 {
     78 static sal_Char const sKomma[] = ", ";
     79 
     80     rText.Erase();
     81     String aStr;
     82     if( Count() )
     83     {
     84         SfxItemIter aIter( *this );
     85         const IntlWrapper rInt(
::comphelper::getProcessServiceFactory(),
     86                                     GetAppLanguage() );
     87         while( sal_True )
     88         {
     89             aIter.GetCurItem()->GetPresentation( ePres, eCoreMetric,
     90                                                  ePresMetric, aStr,
     91                                                  &rInt );
     92             if( rText.Len() && aStr.Len() )
     93                 rText += String::CreateFromAscii(sKomma);
     94             rText += aStr;
     95             if( aIter.IsAtEnd() )
     96                 break;
     97             aIter.NextItem();
     98         }
     99     }
    100 } 
if "rText" variable is completely cleared at the beginning (line 80), what's
the use of "rText.Len() &&..." (line 92) (and therefore line 93 and 78) ?

Julien 

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