erts: Fix race between ets table deletion and auto-unfix

Problem:
1. Process A fixates table T.
2. Process B starts deleting table T (either by ets:delete or exit)
   and does tid_clear().
3. Process A exits and does proc_cleanup_fixed_table()
   and get NULL from btid2tab() and deallocates DbFixation.
4. Process B continues deleting table in free_fixations_locked()
   and finds the deallocated DbFixation in the fixing_procs tree.

Solution:
Wait with tid_clear() until after free_fixations_locked()
has traversed the fixing_procs tree.

0 files changed, 0 insertions, 0 deletions