export specific rows, not all rows at once, to make it easier to reload certain rows

stepmania/src/OptionRow.cpp

@@ -29,8 +29,17 @@ OptionRow::OptionRow()
 }
 
 OptionRow::~OptionRow()
+{
+	Clear();
+}
+
+void OptionRow::Clear()
 {
 	ActorFrame::RemoveAllChildren();
+
+	FOREACH_PlayerNumber( p )
+		m_vbSelected[p].clear();
+
 	for( unsigned i = 0; i < m_textItems.size(); ++i )
 		SAFE_DELETE( m_textItems[i] );
 	m_textItems.clear();
@@ -42,7 +51,6 @@ OptionRow::~OptionRow()
 	}
 }
 
-
 void OptionRow::LoadNormal( const OptionRowDefinition &def )
 {
 	m_RowDef = def;