Fix a crash if a toolbar item which uses a view is removed and then readded. Fixed the initial animation status of the progress indicator if it is added while a refresh is in progress.
Fix a crash if a toolbar item which uses a view is removed and then readded. Fixed the initial animation status of the progress indicator if it is added while a refresh is in progress.

aidanamavi/vienna-rss,lapcat/vienna-rss,barijaona/vienna-rss,Eitot/vienna-rss,ViennaRSS/vienna-rss,Feitianyuan/vienna-rss,barijaona/vienna-rss,lapcat/vienna-rss,dak180/vienna,Eitot/vienna-rss,dak180/vienna,aidanamavi/vienna-rss,josh64x2/vienna-rss,tothgy/vienna-rss,barijaona/vienna-rss,iamjasonchoi/vienna-rss,ViennaRSS/vienna-rss,Feitianyuan/vienna-rss,iamjasonchoi/vienna-rss,tothgy/vienna-rss,barijaona/vienna-rss,aidanamavi/vienna-rss,iamjasonchoi/vienna-rss,tothgy/vienna-rss,dak180/vienna,Eitot/vienna-rss,lapcat/vienna-rss,josh64x2/vienna-rss,josh64x2/vienna-rss,ViennaRSS/vienna-rss,ViennaRSS/vienna-rss,ViennaRSS/vienna-rss,josh64x2/vienna-rss,barijaona/vienna-rss,dak180/vienna,josh64x2/vienna-rss,tothgy/vienna-rss,Eitot/vienna-rss,Feitianyuan/vienna-rss,lapcat/vienna-rss