This correction avoids two types of panics resulting from 
quotactl requests on AdvFS filesets:
- kmf in dyn_hash_remove
- panic "lock_terminate: lock held"

Partial stack traces for the two types of panicing threads follow.

1) panic "lock_terminate: lock held"

    4 panic() "lock_terminate: lock held")
    5 lock_terminate()
    6 dqput()
    7 advfs_get_quota() 
    8 advfs_quotactl() 
    9 cfs_comm_quotactl()
   10 cfs_quotactl()
   11 quotactl()
   12 syscall()
   13 _Xsyscall()

2) kernel memory fault in dyn_hash_remove:

    4 panic
    5 trap 
    6 _XentMM()
    7 dyn_hash_remove()
    8 dqput()
    9 advfs_get_quota()
   10 advfs_quotactl()
   11 cfs_comm_quotactl()
   12 cfs_quotactl()
   13 quotactl()
   14 syscall()
   15 _Xsyscall()


