fixed missing automationPattern-initialization (i.e. setFirstValue()-call) which made automation-editor not work properly if no events were drawn so far

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@777 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/automatable_model_templates.h

@@ -333,6 +333,7 @@ automationPattern * automatableModel<T, EDIT_STEP_TYPE>::getAutomationPattern(
 	if( !m_automationPattern )
 	{
 		m_automationPattern = new automationPattern( m_track, this );
+		setFirstValue();
 		syncAutomationPattern();
 	}
 	return( m_automationPattern );