[pex_dac] fixed bug in QueueGL ex
[pex_dac] fixed bug in QueueGL ex

jck/pymtl,cfelton/pymtl,cornell-brg/pymtl,jjffryan/pymtl,12yujim/pymtl,tj93/pymtl,Abhinav117/pymtl,12yujim/pymtl,jck/pymtl,Abhinav117/pymtl,12yujim/pymtl,Glyfina-Fernando/pymtl,jck/pymtl,tj93/pymtl,cornell-brg/pymtl,Abhinav117/pymtl,Glyfina-Fernando/pymtl,tj93/pymtl,cornell-brg/pymtl,cfelton/pymtl,cfelton/pymtl,jjffryan/pymtl,Abhinav117/pymtl,jjffryan/pymtl,Glyfina-Fernando/pymtl