Render all rows, even blank ones

We need to render all the rows, or else the placement of popup captions will
not be correct.

The previous code worked fine when rendering text horizontally aligned at the
bottom of the screen, but won't work for a real layout.
Signed-off-by: Rafaël Carré <funman@videolan.org>

modules/codec/cc.c

@@ -1079,9 +1079,6 @@ static char *Eia608Text( eia608_t *h, bool b_html )
         Eia608Strlcat( psz, "<text>", i_size );
     for( int i = 0; i < EIA608_SCREEN_ROWS; i++ )
     {
-        if( !screen->row_used[i] )
-            continue;
-
         if( !b_first )
             Eia608Strlcat( psz, b_html ? "<br />" : "\n", i_size );
         b_first = false;