Fix segfault on bogus pgsql2shp call (#2504)

git-svn-id: http://svn.osgeo.org/postgis/trunk@12017 b70326c6-7e19-0410-871a-916f4a2858ee
Add 2.0.4 block in NEWS file

git-svn-id: http://svn.osgeo.org/postgis/trunk@12021 b70326c6-7e19-0410-871a-916f4a2858ee