Fix going back window no. on tabman close#9

KSR-Yasuda wants to merge 1 commit into

kien:masterkien/tabman.vim:masterfrom

KSR-Yasuda:bugfix/GoingBackWinnrOnTabmanCloseKSR-Yasuda/tabman.vim:bugfix/GoingBackWinnrOnTabmanCloseCopy head branch name to clipboard