In some circumstances, when a table is created with
the IBMDB2I engine, the CREATE TABLE statement will
return successfully but the table will not exist.

The current patch addresses the above issue and causes
CREATE to fail and report and error to the user.

storage/ibmdb2i/ha_ibmdb2i.cc:
  Locally declared return code hid function-
  scoped declaration and went out of scope
  before being returned. Removed inner
  declaration.