Fix potential crash when quitting ROOT after closing a TBrowser (on Windows)
Fix potential crash when quitting ROOT after closing a TBrowser (on Windows)

olifre/root,karies/root,karies/root,olifre/root,karies/root,root-mirror/root,root-mirror/root,olifre/root,karies/root,olifre/root,olifre/root,root-mirror/root,karies/root,root-mirror/root,karies/root,root-mirror/root,karies/root,root-mirror/root,olifre/root,olifre/root,olifre/root,karies/root,root-mirror/root,olifre/root,karies/root,root-mirror/root,root-mirror/root,root-mirror/root,olifre/root,karies/root,karies/root,olifre/root,root-mirror/root