#2619, SIGSEGV in ST_GeomFromGeoJSON with empty list of coordinates


git-svn-id: http://svn.osgeo.org/postgis/branches/2.1@12354 b70326c6-7e19-0410-871a-916f4a2858ee
Quiet a pair of llvm warnings


git-svn-id: http://svn.osgeo.org/postgis/branches/2.1@12358 b70326c6-7e19-0410-871a-916f4a2858ee
Add #2619


git-svn-id: http://svn.osgeo.org/postgis/branches/2.1@12359 b70326c6-7e19-0410-871a-916f4a2858ee