Fix memory leak in release notes inline description code.
Fix memory leak in release notes inline description code.

artillery/winsparkle,alamaison/winsparkle,CaptainJackJJ/SmpUpdater,nickdademo/winsparkle,bristol-instruments/winsparkle,Herve-M/winsparkle,bristol-instruments/winsparkle,dsuess/winsparkle,dsuess/winsparkle,drizt/winsparkle,nickdademo/winsparkle,alamaison/winsparkle,drizt/winsparkle,CaptainJackJJ/SmpUpdater,Herve-M/winsparkle,artillery/winsparkle