pgsql: ProcedureCreate neglected to record dependencies on default expr

ProcedureCreate neglected to record dependencies on default expressions.

Thus, an object referenced in a default expression could be dropped while
the function remained present.  This was unaccountably missed in the
original patch to add default parameters for functions.  Reported by
Pavel Stehule.

Branch
------
REL9_1_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/b733331d0fe0ecb36aa629f187876734da25ea80

Modified Files
--------------
src/backend/catalog/pg_proc.c |    5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)