pgsql: Fix crash if a DROP is attempted on an internally-dependent - Mailing list pgsql-committers

Log Message:
-----------
Fix crash if a DROP is attempted on an internally-dependent object.
Introduced in 8.4 rewrite of dependency.c.
Per bug #5072 from Amit Khandekar.

Modified Files:
--------------
    pgsql/src/backend/catalog:
        dependency.c (r1.90 -> r1.91)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/dependency.c?r1=1.90&r2=1.91)
    pgsql/src/test/regress/expected:
        rules.out (r1.149 -> r1.150)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/expected/rules.out?r1=1.149&r2=1.150)
    pgsql/src/test/regress/sql:
        rules.sql (r1.35 -> r1.36)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/sql/rules.sql?r1=1.35&r2=1.36)