Unsupported geometry types in coverageSimplify result in segfaults

[martinfleis]

coverageSimplify has a tendency to produce segfaults when given unsupported geometry types. I ran into it while doing the shapely wrapper in shapely/shapely#1969.

See examples below:

% geosop -a "MULTILINESTRING ((200 100, 100 100, 200 200), (200 200, 200 100), (200 200, 300 100, 200 100))" -v -e coverageSimplify 10
Input A: WKT literal
Read 1 geometries, 8 vertices  -- 174 usec
zsh: segmentation fault  geosop -a  -v -e coverageSimplify 10

% geosop -a "MULTIPOINT ((0 0), (0 1), (1 1), (1 0))" -v -e coverageSimplify 2
Input A: WKT literal
Read 1 geometries, 4 vertices  -- 59 usec
zsh: segmentation fault  geosop -a "MULTIPOINT ((0 0), (0 1), (1 1), (1 0))" -v -e coverageSimplify 2

% geosop -a "GEOMETRYCOLLECTION (POLYGON ((0 0, 20 0, 20 10, 10 5, 0 10, 0 0)), LINEARRING (0 10, 10 5, 20 10, 20 20, 0 20, 0 10))" -v -e coverageSimplify 20 
Input A: WKT literal
Read 1 geometries, 12 vertices  -- 40 usec
zsh: segmentation fault  geosop -a  -v -e coverageSimplify 20

CoverageUnion results in IllegalArgumentException: Unhandled geometry type in CoverageUnion. which is what I'd expect here as well.

Using GEOS 3.12.1.