agnosticbin: Avoid linking queue to tee more than once
agnosticbin: Avoid linking queue to tee more than once

If we use blocking the function could be called more than one and can
cause problems setting the chain function more than one

Change-Id: Ifbbeeebd76da7901bb107379117f3eeb4e6dbbde

Kurento/kms-elements,Kurento/kms-elements,Kurento/kms-elements,shelsonjava/kms-elements,TribeMedia/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements,shelsonjava/kms-elements,TribeMedia/kms-elements