ST_Split goes into infinite loop with empty geometries

[robe]

SELECT ST_Split('LINESTRING EMPTY'::geometry, ST_Point(10,50)) As result

with recurring notice:

NOTICE:  lwgeom_api.c [138] called with n=511880 and npoints=0
NOTICE:  lwgeom_api.c [138] called with n=511881 and npoints=0

[Sandro Santilli <strk@…>]

In 34007a2/git:

Demote ST_Split notices to debug

Closes #5152

[komzpa]

ahem strk the endless loop is still there.