modified:
  storage/connect/connect.cc
  storage/connect/tabutil.h

- Fix closing invalid tdbp in External_lock.
modified:
  storage/connect/ha_connect.cc

- Fix closing null Tdbp
modified:
  storage/connect/tabpivot.cpp*

- Fix regression error in table type TBL no more accepting missing
  columns in sub-tables even when Accept was set to TRUE.
modified:
  storage/connect/tabtbl.cpp