fdo#78332: sw: fix separators in SwDDEFieldType::PutValue()

Setting 3 separators instead of 2 does not work.

(regression from 26315384)

Change-Id: Id0b4649404b8a49a7f89a237c46106bce4e146ff

sw/source/core/fields/ddefld.cxx

@@ -366,7 +366,8 @@ bool SwDDEFieldType::PutValue( const uno::Any& rVal, sal_uInt16 nWhichId )
             {
                 rVal >>= sToken;
             }
-            sNewCmd += sToken + OUString(sfx2::cTokenSeparator);
+            sNewCmd += (i < 2)
+                ? sToken + OUString(sfx2::cTokenSeparator) : sToken;
         }
         SetCmd( sNewCmd );
     }