mount: don't add extra / between a temporary root and mountpoint
mount: don't add extra / between a temporary root and mountpoint

Currenlty a generated path contains two slashes successively.

Signed-off-by: Andrey Vagin <74c05afa918858348d6db8037d82fa8124870113@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

tych0/criu,fbocharov/criu,LK4D4/criu,LK4D4/criu,svloyso/criu,rentzsch/criu,sdgdsffdsfff/criu,gonkulator/criu,svloyso/criu,marcosnils/criu,eabatalov/criu,biddyweb/criu,fbocharov/criu,AuthenticEshkinKot/criu,AuthenticEshkinKot/criu,svloyso/criu,gonkulator/criu,marcosnils/criu,sdgdsffdsfff/criu,efiop/criu,sdgdsffdsfff/criu,eabatalov/criu,KKoukiou/criu-remote,wtf42/criu,eabatalov/criu,AuthenticEshkinKot/criu,ldu4/criu,ldu4/criu,biddyweb/criu,wtf42/criu,AuthenticEshkinKot/criu,gablg1/criu,marcosnils/criu,biddyweb/criu,fbocharov/criu,gablg1/criu,gonkulator/criu,LK4D4/criu,eabatalov/criu,biddyweb/criu,biddyweb/criu,KKoukiou/criu-remote,wtf42/criu,AuthenticEshkinKot/criu,efiop/criu,efiop/criu,KKoukiou/criu-remote,ldu4/criu,gablg1/criu,LK4D4/criu,KKoukiou/criu-remote,rentzsch/criu,tych0/criu,fbocharov/criu,efiop/criu,gablg1/criu,efiop/criu,eabatalov/criu,tych0/criu,biddyweb/criu,ldu4/criu,marcosnils/criu,tych0/criu,rentzsch/criu,fbocharov/criu,LK4D4/criu,fbocharov/criu,svloyso/criu,rentzsch/criu,wtf42/criu,wtf42/criu,gablg1/criu,gonkulator/criu,tych0/criu,ldu4/criu,svloyso/criu,tych0/criu,gonkulator/criu,wtf42/criu,rentzsch/criu,gonkulator/criu,marcosnils/criu,sdgdsffdsfff/criu,eabatalov/criu,rentzsch/criu,KKoukiou/criu-remote,LK4D4/criu,AuthenticEshkinKot/criu,marcosnils/criu,sdgdsffdsfff/criu,efiop/criu,gablg1/criu,sdgdsffdsfff/criu,KKoukiou/criu-remote,ldu4/criu,svloyso/criu